https://github.com/grandyang/leetcode

Provide all my solutions and explanations in Chinese for all the Leetcode coding problems.
https://github.com/grandyang/leetcode

alogrithms array coding-practices data-structures interview-questions leetcode leetcode-solutions sort

Last synced: 7 days ago
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Provide all my solutions and explanations in Chinese for all the Leetcode coding problems.

• Host: GitHub
• URL: https://github.com/grandyang/leetcode
• Owner: grandyang
• Created: 2019-05-30T16:10:21.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2024-12-29T12:14:39.000Z (about 1 month ago)
• Last Synced: 2024-12-29T13:23:07.011Z (about 1 month ago)
• Topics: alogrithms, array, coding-practices, data-structures, interview-questions, leetcode, leetcode-solutions, sort
• Size: 9.39 MB
• Stars: 6,167
• Watchers: 241
• Forks: 737
• Open Issues: 2,014
• Metadata Files:
  • Readme: README-CN.md
  • Funding: .github/FUNDING.yml

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• ultimate-awesome - LeetCode

README

        
# LeetCode All In One

![](https://img.shields.io/travis/skygragon/leetcode-cli.svg?style=flat)

![](https://img.shields.io/badge/language-C++-red.svg)

![](https://img.shields.io/badge/language-Java-yellow.svg)

![](https://img.shields.io/badge/%3E-leetcode-green.svg)

![](https://img.shields.io/badge/%3C-awesome-green.svg)

[English](./README.md) | 简体中文

---

提供博主所有的 LeetCode 的解题代码和中文讲解。

与博客园上相同: [LeetCode All in One 题目讲解汇总(持续更新中...)](https://www.cnblogs.com/grandyang/p/4606334.html)

[请点击下方图片观看讲解视频](https://www.youtube.com/playlist?list=PLZFoAdzIur8ii06R2KsX7Mct2PEuUh0tc)

[![Video](https://raw.githubusercontent.com/grandyang/leetcode/master/podcast.png)](https://www.youtube.com/playlist?list=PLZFoAdzIur8ii06R2KsX7Mct2PEuUh0tc)

Note: 所有的讲解写在了 GitHub Issue 上面, **请不要在本项目中新建任何的 Issue 或者 Pull Request，因为博主希望题目编号和 Issue 编号保持一致**，多谢！

('$' 代表锁住的题目, '*' 代表数据库类题目, '#' 代表脚本类题目, '~' 代表并行类题目。)

| # | Title | Solution | Difficulty |

|---| ----- | -------- | ---------- |

|1352|[Product of the Last K Numbers](https://github.com/grandyang/leetcode/issues/1352)|50.20%|Medium|

|1351|[Count Negative Numbers in a Sorted Matrix](https://github.com/grandyang/leetcode/issues/1351)|77.30%|Easy|

|1350|Students With Invalid Departments * $|89.90%|Easy|

|1349|[Maximum Students Taking Exam](https://github.com/grandyang/leetcode/issues/1349)|49.80%|Hard|

|1348|[Tweet Counts Per Frequency](https://github.com/grandyang/leetcode/issues/1348)|44.00%|Medium|

|1347|[Minimum Number of Steps to Make Two Strings Anagram](https://github.com/grandyang/leetcode/issues/1347)|78.00%|Medium|

|1346|[Check If N and Its Double Exist](https://github.com/grandyang/leetcode/issues/1346)|36.70%|Easy|

|1345|[Jump Game IV](https://github.com/grandyang/leetcode/issues/1345)|46.60%|Hard|

|1344|[Angle Between Hands of a Clock](https://github.com/grandyang/leetcode/issues/1344)|63.40%|Medium|

|1343|[Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold](https://github.com/grandyang/leetcode/issues/1343)|68.10%|Medium|

|1342|[Number of Steps to Reduce a Number to Zero](https://github.com/grandyang/leetcode/issues/1342)|84.90%|Easy|

|1341|Movie Rating  *|43.80%|Medium|

|1340|[Jump Game V](https://github.com/grandyang/leetcode/issues/1340)|62.60%|Hard|

|1339|[Maximum Product of Splitted Binary Tree](https://github.com/grandyang/leetcode/issues/1339)|47.70%|Medium|

|1338|[Reduce Array Size to The Half](https://github.com/grandyang/leetcode/issues/1338)|69.20%|Medium|

|1337|[The K Weakest Rows in a Matrix](https://github.com/grandyang/leetcode/issues/1337)|71.40%|Easy|

|1336|Number of Transactions per Visit  *|48.10%|Hard|

|1335|[Minimum Difficulty of a Job Schedule](https://github.com/grandyang/leetcode/issues/1335)|58.30%|Hard|

|1334|[Find the City With the Smallest Number of Neighbors at a Threshold Distance](https://github.com/grandyang/leetcode/issues/1334)|57.70%|Medium|

|1333|"Filter Restaurants by Vegan-Friendly| Price and Distance"|60.50%|

|1332|[Remove Palindromic Subsequences](https://github.com/grandyang/leetcode/issues/1332)|76.20%|Easy|

|1331|[Rank Transform of an Array](https://github.com/grandyang/leetcode/issues/1331)|59.80%|Easy|

|1330|[Reverse Subarray To Maximize Array Value](https://github.com/grandyang/leetcode/issues/1330)|41.30%|Hard|

|1329|[Sort the Matrix Diagonally](https://github.com/grandyang/leetcode/issues/1329)|83.00%|Medium|

|1328|[Break a Palindrome](https://github.com/grandyang/leetcode/issues/1328)|52.10%|Medium|

|1327|List the Products Ordered in a Period  *|71.90%|Easy|

|1326|[Minimum Number of Taps to Open to Water a Garden](https://github.com/grandyang/leetcode/issues/1326)|51.60%|Hard|

|1325|[Delete Leaves With a Given Value](https://github.com/grandyang/leetcode/issues/1325)|74.40%|Medium|

|1324|[Print Words Vertically](https://github.com/grandyang/leetcode/issues/1324)|62.40%|Medium|

|1323|[Maximum 69 Number](https://github.com/grandyang/leetcode/issues/1323)|82.00%|Easy|

|1322|Ads Performance * $|60.10%|Easy|

|1321|Restaurant Growth  *|53.40%|Medium|

|1320|[Minimum Distance to Type a Word Using Two Fingers](https://github.com/grandyang/leetcode/issues/1320)|59.80%|Hard|

|1319|[Number of Operations to Make Network Connected](https://github.com/grandyang/leetcode/issues/1319)|58.50%|Medium|

|1318|[Minimum Flips to Make a OR b Equal to c](https://github.com/grandyang/leetcode/issues/1318)|66.00%|Medium|

|1317|[Convert Integer to the Sum of Two No-Zero Integers](https://github.com/grandyang/leetcode/issues/1317)|56.00%|Easy|

|1316|[Distinct Echo Substrings](https://github.com/grandyang/leetcode/issues/1316)|49.70%|Hard|

|1315|[Sum of Nodes with Even-Valued Grandparent](https://github.com/grandyang/leetcode/issues/1315)|85.60%|Medium|

|1314|[Matrix Block Sum](https://github.com/grandyang/leetcode/issues/1314)|75.40%|Medium|

|1313|[Decompress Run-Length Encoded List](https://github.com/grandyang/leetcode/issues/1313)|85.90%|Easy|

|1312|[Minimum Insertion Steps to Make a String Palindrome](https://github.com/grandyang/leetcode/issues/1312)|65.70%|Hard|

|1311|[Get Watched Videos by Your Friends](https://github.com/grandyang/leetcode/issues/1311)|45.90%|Medium|

|1310|[XOR Queries of a Subarray](https://github.com/grandyang/leetcode/issues/1310)|72.20%|Medium|

|1309|[Decrypt String from Alphabet to Integer Mapping](https://github.com/grandyang/leetcode/issues/1309)|79.50%|Easy|

|1308|Running Total for Different Genders * $|88.20%|Medium|

|1307|[Verbal Arithmetic Puzzle](https://github.com/grandyang/leetcode/issues/1307)|34.80%|Hard|

|1306|[Jump Game III](https://github.com/grandyang/leetcode/issues/1306)|63.10%|Medium|

|1305|[All Elements in Two Binary Search Trees](https://github.com/grandyang/leetcode/issues/1305)|79.80%|Medium|

|1304|[Find N Unique Integers Sum up to Zero](https://github.com/grandyang/leetcode/issues/1304)|77.10%|Easy|

|1303|Find the Team Size * $|90.80%|Easy|

|1302|[Deepest Leaves Sum](https://github.com/grandyang/leetcode/issues/1302)|86.90%|Medium|

|1301|[Number of Paths with Max Score](https://github.com/grandyang/leetcode/issues/1301)|38.70%|Hard|

|1300|[Sum of Mutated Array Closest to Target](https://github.com/grandyang/leetcode/issues/1300)|43.10%|Medium|

|1299|[Replace Elements with Greatest Element on Right Side](https://github.com/grandyang/leetcode/issues/1299)|74.70%|Easy|

|1298|[Maximum Candies You Can Get from Boxes](https://github.com/grandyang/leetcode/issues/1298)|60.90%|Hard|

|1297|[Maximum Number of Occurrences of a Substring](https://github.com/grandyang/leetcode/issues/1297)|52.00%|Medium|

|1296|[Divide Array in Sets of K Consecutive Numbers](https://github.com/grandyang/leetcode/issues/1296)|56.60%|Medium|

|1295|[Find Numbers with Even Number of Digits](https://github.com/grandyang/leetcode/issues/1295)|77.00%|Easy|

|1294|Weather Type in Each Country * $|68.00%|Easy|

|1293|[Shortest Path in a Grid with Obstacles Elimination](https://github.com/grandyang/leetcode/issues/1293)|45.60%|Hard|

|1292|[Maximum Side Length of a Square with Sum Less than or Equal to Threshold](https://github.com/grandyang/leetcode/issues/1292)|52.10%|Medium|

|1291|[Sequential Digits](https://github.com/grandyang/leetcode/issues/1291)|60.90%|Medium|

|1290|[Convert Binary Number in a Linked List to Integer](https://github.com/grandyang/leetcode/issues/1290)|82.70%|Easy|

|1289|[Minimum Falling Path Sum II](https://github.com/grandyang/leetcode/issues/1289)|61.20%|Hard|

|1288|[Remove Covered Intervals](https://github.com/grandyang/leetcode/issues/1288)|57.40%|Medium|

|1287|[Element Appearing More Than 25% In Sorted Array](https://github.com/grandyang/leetcode/issues/1287)|59.50%|Easy|

|1286|[Iterator for Combination](https://github.com/grandyang/leetcode/issues/1286)|73.20%|Medium|

|1285|Find the Start and End Number of Continuous Ranges * $|88.30%|Medium|

|1284|[Minimum Number of Flips to Convert Binary Matrix to Zero Matrix](https://github.com/grandyang/leetcode/issues/1284)|72.00%|Hard|

|1283|[Find the Smallest Divisor Given a Threshold](https://github.com/grandyang/leetcode/issues/1283)|53.70%|Medium|

|1282|[Group the People Given the Group Size They Belong To](https://github.com/grandyang/leetcode/issues/1282)|85.20%|Medium|

|1281|[Subtract the Product and Sum of Digits of an Integer](https://github.com/grandyang/leetcode/issues/1281)|86.30%|Easy|

|1280|Students and Examinations * $|74.60%|Easy|

|1279|Traffic Light Controlled Intersection ~ $|75.30%|Easy|

|1278|[Palindrome Partitioning III](https://github.com/grandyang/leetcode/issues/1278)|60.90%|Hard|

|1277|[Count Square Submatrices with All Ones](https://github.com/grandyang/leetcode/issues/1277)|74.20%|Medium|

|1276|[Number of Burgers with No Waste of Ingredients](https://github.com/grandyang/leetcode/issues/1276)|50.60%|Medium|

|1275|[Find Winner on a Tic Tac Toe Game](https://github.com/grandyang/leetcode/issues/1275)|54.90%|Easy|

|1274|Number of Ships in a Rectangle  $|68.60%|Hard|

|1273|Delete Tree Nodes  $|61.20%|Medium|

|1272|Remove Interval  $|61.10%|Medium|

|1271|Hexspeak  $|56.30%|Easy|

|1270|All People Report to the Given Manager * $|88.10%|Medium|

|1269|[Number of Ways to Stay in the Same Place After Some Steps](https://github.com/grandyang/leetcode/issues/1269)|43.40%|Hard|

|1268|[Search Suggestions System](https://github.com/grandyang/leetcode/issues/1268)|65.40%|Medium|

|1267|Count Servers that Communicate|58.30%|Medium|

|1266|[Minimum Time Visiting All Points](https://github.com/grandyang/leetcode/issues/1266)|79.20%|Easy|

|1265|Print Immutable Linked List in Reverse  $|94.30%|Medium|

|1264|Page Recommendations * $|67.70%|Medium|

|1263|[Minimum Moves to Move a Box to Their Target Location](https://github.com/grandyang/leetcode/issues/1263)|48.30%|Hard|

|1262|[Greatest Sum Divisible by Three](https://github.com/grandyang/leetcode/issues/1262)|50.80%|Medium|

|1261|[Find Elements in a Contaminated Binary Tree](https://github.com/grandyang/leetcode/issues/1261)|75.70%|Medium|

|1260|[Shift 2D Grid](https://github.com/grandyang/leetcode/issues/1260)|62.10%|Easy|

|1259|Handshakes That Don't Cross  $|54.40%|Hard|

|1258|Synonymous Sentences  $|57.40%|Medium|

|1257|Smallest Common Region  $|62.10%|Medium|

|1256|Encode Number  $|69.00%|Medium|

|1255|[Maximum Score Words Formed by Letters](https://github.com/grandyang/leetcode/issues/1255)|71.30%|Hard|

|1254|[Number of Closed Islands](https://github.com/grandyang/leetcode/issues/1254)|62.70%|Medium|

|1253|[Reconstruct a 2-Row Binary Matrix](https://github.com/grandyang/leetcode/issues/1253)|42.70%|Medium|

|1252|[Cells with Odd Values in a Matrix](https://github.com/grandyang/leetcode/issues/1252)|78.50%|Easy|

|1251|Average Selling Price * $|83.20%|Easy|

|1250|[Check If It Is a Good Array](https://github.com/grandyang/leetcode/issues/1250)|57.50%|Hard|

|1249|[Minimum Remove to Make Valid Parentheses](https://github.com/grandyang/leetcode/issues/1249)|65.00%|Medium|

|1248|[Count Number of Nice Subarrays](https://github.com/grandyang/leetcode/issues/1248)|57.60%|Medium|

|1247|[Minimum Swaps to Make Strings Equal](https://github.com/grandyang/leetcode/issues/1247)|63.60%|Medium|

|1246|Palindrome Removal  $|45.80%|Hard|

|1245|Tree Diameter  $|62.00%|Medium|

|1244|Design A Leaderboard  $|67.30%|Medium|

|1243|Array Transformation  $|50.10%|Easy|

|1242|Web Crawler Multithreaded ~ $|48.20%|Medium|

|1241|Number of Comments per Post * $|68.00%|Easy|

|1240|[Tiling a Rectangle with the Fewest Squares](https://github.com/grandyang/leetcode/issues/1240)|52.40%|Hard|

|1239|[Maximum Length of a Concatenated String with Unique Characters](https://github.com/grandyang/leetcode/issues/1239)|50.70%|Medium|

|1238|[Circular Permutation in Binary Representation](https://github.com/grandyang/leetcode/issues/1238)|67.90%|Medium|

|1237|[Find Positive Integer Solution for a Given Equation](https://github.com/grandyang/leetcode/issues/1237)|69.70%|Medium|

|1236|Web Crawler  $|65.40%|Medium|

|1235|[Maximum Profit in Job Scheduling](https://github.com/grandyang/leetcode/issues/1235)|50.50%|Hard|

|1234|[Replace the Substring for Balanced String](https://github.com/grandyang/leetcode/issues/1234)|35.50%|Medium|

|1233|[Remove Sub-Folders from the Filesystem](https://github.com/grandyang/leetcode/issues/1233)|64.50%|Medium|

|1232|[Check If It Is a Straight Line](https://github.com/grandyang/leetcode/issues/1232)|42.30%|Easy|

|1231|Divide Chocolate  $|55.50%|Hard|

|1230|Toss Strange Coins  $|50.80%|Medium|

|1229|Meeting Scheduler  $|54.70%|Medium|

|1228|Missing Number In Arithmetic Progression  $|51.20%|Medium|

|1227|[Airplane Seat Assignment Probability](https://github.com/grandyang/leetcode/issues/1227)|63.00%|Medium|

|1226|The Dining Philosophers ~|60.20%|Medium|

|1225|Report Contiguous Dates  *|63.80%|Hard|

|1224|[Maximum Equal Frequency](https://github.com/grandyang/leetcode/issues/1224)|36.20%|Hard|

|1223|[Dice Roll Simulation](https://github.com/grandyang/leetcode/issues/1223)|47.40%|Hard|

|1222|[Queens That Can Attack the King](https://github.com/grandyang/leetcode/issues/1222)|70.20%|Medium|

|1221|[Split a String in Balanced Strings](https://github.com/grandyang/leetcode/issues/1221)|84.60%|Easy|

|1220|[Count Vowels Permutation](https://github.com/grandyang/leetcode/issues/1220)|56.60%|Hard|

|1219|[Path with Maximum Gold](https://github.com/grandyang/leetcode/issues/1219)|66.10%|Medium|

|1218|[Longest Arithmetic Subsequence of Given Difference](https://github.com/grandyang/leetcode/issues/1218)|48.10%|Medium|

|1217|[Minimum Cost to Move Chips to The Same Position](https://github.com/grandyang/leetcode/issues/1217)|70.70%|Easy|

|1216|Valid Palindrome III  $|50.80%|Hard|

|1215|Stepping Numbers  $|44.60%|Medium|

|1214|Two Sum BSTs  $|67.30%|Medium|

|1213|Intersection of Three Sorted Arrays  $|79.80%|Easy|

|1212|Team Scores in Football Tournament  *|57.00%|Medium|

|1211|Queries Quality and Percentage  *|70.40%|Easy|

|1210|[Minimum Moves to Reach Target with Rotations](https://github.com/grandyang/leetcode/issues/1210)|47.50%|Hard|

|1209|[Remove All Adjacent Duplicates in String II](https://github.com/grandyang/leetcode/issues/1209)|56.40%|Medium|

|1208|[Get Equal Substrings Within Budget](https://github.com/grandyang/leetcode/issues/1208)|45.30%|Medium|

|1207|[Unique Number of Occurrences](https://github.com/grandyang/leetcode/issues/1207)|72.40%|Easy|

|1206|[Design Skiplist](https://github.com/grandyang/leetcode/issues/1206)|59.60%|Hard|

|1205|Monthly Transactions II  *|45.30%|Medium|

|1204|Last Person to Fit in the Bus  *|73.00%|Medium|

|1203|[Sort Items by Groups Respecting Dependencies](https://github.com/grandyang/leetcode/issues/1203)|48.80%|Hard|

|1202|[Smallest String With Swaps](https://github.com/grandyang/leetcode/issues/1202)|50.50%|Medium|

|1201|[Ugly Number III](https://github.com/grandyang/leetcode/issues/1201)|27.20%|Medium|

|1200|[Minimum Absolute Difference](https://github.com/grandyang/leetcode/issues/1200)|67.30%|Easy|

|1199|Minimum Time to Build Blocks  $|39.40%|Hard|

|1198|Find Smallest Common Element in All Rows  $|76.30%|Medium|

|1197|Minimum Knight Moves  $|38.60%|Medium|

|1196|How Many Apples Can You Put into the Basket  $|68.30%|Easy|

|1195|Fizz Buzz Multithreaded ~|71.40%|Medium|

|1194|Tournament Winners  *|52.70%|Hard|

|1193|Monthly Transactions I  *|68.70%|Medium|

|1192|[Critical Connections in a Network](https://github.com/grandyang/leetcode/issues/1192)|51.80%|Hard|

|1191|[K-Concatenation Maximum Sum](https://github.com/grandyang/leetcode/issues/1191)|24.60%|Medium|

|1190|[Reverse Substrings Between Each Pair of Parentheses](https://github.com/grandyang/leetcode/issues/1190)|65.00%|Medium|

|1189|[Maximum Number of Balloons](https://github.com/grandyang/leetcode/issues/1189)|62.00%|Easy|

|1188|Design Bounded Blocking Queue ~|73.20%|Medium|

|1187|[Make Array Strictly Increasing](https://github.com/grandyang/leetcode/issues/1187)|43.80%|Hard|

|1186|[Maximum Subarray Sum with One Deletion](https://github.com/grandyang/leetcode/issues/1186)|39.80%|Medium|

|1185|[Day of the Week](https://github.com/grandyang/leetcode/issues/1185)|59.90%|Easy|

|1184|[Distance Between Bus Stops](https://github.com/grandyang/leetcode/issues/1184)|53.90%|Easy|

|1183|Maximum Number of Ones  $|58.70%|Hard|

|1182|Shortest Distance to Target Color  $|54.30%|Medium|

|1181|Before and After Puzzle  $|44.70%|Medium|

|1180|Count Substrings with Only One Distinct Letter  $|78.30%|Easy|

|1179|Reformat Department Table  *|82.10%|Easy|

|1178|[Number of Valid Words for Each Puzzle](https://github.com/grandyang/leetcode/issues/1178)|40.80%|Hard|

|1177|[Can Make Palindrome from Substring](https://github.com/grandyang/leetcode/issues/1177)|36.50%|Medium|

|1176|Diet Plan Performance  $|53.50%|Easy|

|1175|[Prime Arrangements](https://github.com/grandyang/leetcode/issues/1175)|51.90%|Medium|

|1174|Immediate Food Delivery II  *|63.10%|Medium|

|1173|Immediate Food Delivery I  *|83.10%|Easy|

|1172|[Dinner Plate Stacks](https://github.com/grandyang/leetcode/issues/1172)|36.40%|Hard|

|1171|[Remove Zero Sum Consecutive Nodes from Linked List](https://github.com/grandyang/leetcode/issues/1171)|41.90%|Medium|

|1170|[Compare Strings by Frequency of the Smallest Character](https://github.com/grandyang/leetcode/issues/1170)|60.60%|Medium|

|1169|[Invalid Transactions](https://github.com/grandyang/leetcode/issues/1169)|30.40%|Medium|

|1168|Optimize Water Distribution in a Village  $|62.30%|Hard|

|1167|Minimum Cost to Connect Sticks  $|65.70%|Medium|

|1166|Design File System  $|59.00%|Medium|

|1165|Single-Row Keyboard  $|85.50%|Easy|

|1164|Product Price at a Given Date  *|69.00%|Medium|

|1163|[Last Substring in Lexicographical Order](https://github.com/grandyang/leetcode/issues/1163)|36.00%|Hard|

|1162|[As Far from Land as Possible](https://github.com/grandyang/leetcode/issues/1162)|46.60%|Medium|

|1161|[Maximum Level Sum of a Binary Tree](https://github.com/grandyang/leetcode/issues/1161)|67.50%|Medium|

|1160|[Find Words That Can Be Formed by Characters](https://github.com/grandyang/leetcode/issues/1160)|67.80%|Easy|

|1159|Market Analysis II  *|57.00%|Hard|

|1158|Market Analysis I  *|65.00%|Medium|

|1157|[Online Majority Element In Subarray](https://github.com/grandyang/leetcode/issues/1157)|41.60%|Hard|

|1156|[Swap For Longest Repeated Character Substring](https://github.com/grandyang/leetcode/issues/1156)|47.20%|Medium|

|1155|[Number of Dice Rolls With Target Sum](https://github.com/grandyang/leetcode/issues/1155)|47.70%|Medium|

|1154|[Day of the Year](https://github.com/grandyang/leetcode/issues/1154)|50.10%|Easy|

|1153|String Transforms Into Another String  $|35.60%|Hard|

|1152|Analyze User Website Visit Pattern  $|43.20%|Medium|

|1151|Minimum Swaps to Group All 1's Together  $|51.90%|Medium|

|1150|Check If a Number Is Majority Element in a Sorted Array  $|57.10%|Easy|

|1149|Article Views II * $|48.20%|Medium|

|1148|Article Views I * $|77.10%|Easy|

|1147|[Longest Chunked Palindrome Decomposition](https://github.com/grandyang/leetcode/issues/1147)|59.80%|Hard|

|1146|[Snapshot Array](https://github.com/grandyang/leetcode/issues/1146)|37.00%|Medium|

|1145|[Binary Tree Coloring Game](https://github.com/grandyang/leetcode/issues/1145)|51.10%|Medium|

|1144|[Decrease Elements To Make Array Zigzag](https://github.com/grandyang/leetcode/issues/1144)|46.50%|Medium|

|1143|[Longest Common Subsequence](https://github.com/grandyang/leetcode/issues/1143)|58.80%|Medium|

|1142|User Activity for the Past 30 Days II * $|35.50%|Easy|

|1141|User Activity for the Past 30 Days I * $|54.60%|Easy|

|1140|[Stone Game II](https://github.com/grandyang/leetcode/issues/1140)|64.60%|Medium|

|1139|[Largest 1-Bordered Square](https://github.com/grandyang/leetcode/issues/1139)|48.70%|Medium|

|1138|[Alphabet Board Path](https://github.com/grandyang/leetcode/issues/1138)|51.60%|Medium|

|1137|[N-th Tribonacci Number](https://github.com/grandyang/leetcode/issues/1137)|55.70%|Easy|

|1136|Parallel Courses  $|60.70%|Medium|

|1135|Connecting Cities With Minimum Cost  $|60.00%|Easy|

|1134|Armstrong Number  $|78.50%|Easy|

|1133|Largest Unique Number  $|67.20%|Easy|

|1132|Reported Posts II * $|34.40%|Medium|

|1131|[Maximum of Absolute Value Expression](https://github.com/grandyang/leetcode/issues/1131)|51.30%|Medium|

|1130|[Minimum Cost Tree From Leaf Values](https://github.com/grandyang/leetcode/issues/1130)|67.40%|Medium|

|1129|[Shortest Path with Alternating Colors](https://github.com/grandyang/leetcode/issues/1129)|40.70%|Medium|

|1128|[Number of Equivalent Domino Pairs](https://github.com/grandyang/leetcode/issues/1128)|45.90%|Easy|

|1127|User Purchase Platform * $|50.80%|Hard|

|1126|Active Businesses * $|68.40%|Medium|

|1125|[Smallest Sufficient Team](https://github.com/grandyang/leetcode/issues/1125)|47.20%|Hard|

|1124|[Longest Well-Performing Interval](https://github.com/grandyang/leetcode/issues/1124)|33.50%|Medium|

|1123|[Lowest Common Ancestor of Deepest Leaves](https://github.com/grandyang/leetcode/issues/1123)|68.50%|Medium|

|1122|[Relative Sort Array](https://github.com/grandyang/leetcode/issues/1122)|67.90%|Easy|

|1121|Divide Array Into Increasing Sequences  $|59.00%|Hard|

|1120|Maximum Average Subtree  $|64.50%|Medium|

|1119|Remove Vowels from a String  $|90.50%|Easy|

|1118|Number of Days in a Month  $|57.30%|Easy|

|1117|Building H2O ~|53.10%|Medium|

|1116|Print Zero Even Odd ~|58.20%|Medium|

|1115|Print FooBar Alternately ~|59.00%|Medium|

|1114|Print in Order ~|67.60%|Easy|

|1113|Reported Posts * $|66.40%|Medium|

|1112|Highest Grade For Each Student * $|72.80%|Medium|

|1111|[Maximum Nesting Depth of Two Valid Parentheses Strings](https://github.com/grandyang/leetcode/issues/1111)|72.70%|Medium|

|1110|[Delete Nodes And Return Forest](https://github.com/grandyang/leetcode/issues/1110)|68.00%|Medium|

|1109|[Corporate Flight Bookings](https://github.com/grandyang/leetcode/issues/1109)|54.30%|Medium|

|1108|[Defanging an IP Address](https://github.com/grandyang/leetcode/issues/1108)|88.40%|Easy|

|1107|New Users Daily Count * $|46.10%|Medium|

|1106|[Parsing A Boolean Expression](https://github.com/grandyang/leetcode/issues/1106)|59.50%|Hard|

|1105|[Filling Bookcase Shelves](https://github.com/grandyang/leetcode/issues/1105)|57.50%|Medium|

|1104|[Path In Zigzag Labelled Binary Tree](https://github.com/grandyang/leetcode/issues/1104)|73.50%|Medium|

|1103|[Distribute Candies to People](https://github.com/grandyang/leetcode/issues/1103)|63.40%|Easy|

|1102|Path With Maximum Minimum Value  $|51.00%|Medium|

|1101|The Earliest Moment When Everyone Become Friends  $|67.80%|Medium|

|1100|Find K-Length Substrings With No Repeated Characters  $|73.10%|Medium|

|1099|Two Sum Less Than K  $|60.80%|Easy|

|1098|Unpopular Books * $|45.50%|Medium|

|1097|Game Play Analysis V * $|57.00%|Hard|

|1096|[Brace Expansion II](https://github.com/grandyang/leetcode/issues/1096)|62.90%|Hard|

|1095|[Find in Mountain Array](https://github.com/grandyang/leetcode/issues/1095)|36.10%|Hard|

|1094|[Car Pooling](https://github.com/grandyang/leetcode/issues/1094)|59.70%|Medium|

|1093|[Statistics from a Large Sample](https://github.com/grandyang/leetcode/issues/1093)|48.50%|Medium|

|1092|[Shortest Common Supersequence](https://github.com/grandyang/leetcode/issues/1092)|53.40%|Hard|

|1091|[Shortest Path in Binary Matrix](https://github.com/grandyang/leetcode/issues/1091)|40.30%|Medium|

|1090|[Largest Values From Labels](https://github.com/grandyang/leetcode/issues/1090)|60.10%|Medium|

|1089|[Duplicate Zeros](https://github.com/grandyang/leetcode/issues/1089)|51.60%|Easy|

|1088|[Confusing Number II](https://github.com/grandyang/leetcode/issues/1088)|45.60%|Hard|

|1087|Brace Expansion  $|63.20%|Medium|

|1086|High Five  $|77.50%|Easy|

|1085|Sum of Digits in the Minimum Number  $|75.10%|Easy|

|1084|Sales Analysis III * $|54.80%|Easy|

|1083|Sales Analysis II * $|50.80%|Easy|

|1082|Sales Analysis I * $|73.90%|Easy|

|1081|[Smallest Subsequence of Distinct Characters](https://github.com/grandyang/leetcode/issues/1081)|53.60%|Medium|

|1080|[Insufficient Nodes in Root to Leaf Paths](https://github.com/grandyang/leetcode/issues/1080)|50.10%|Medium|

|1079|[Letter Tile Possibilities](https://github.com/grandyang/leetcode/issues/1079)|75.90%|Medium|

|1078|[Occurrences After Bigram](https://github.com/grandyang/leetcode/issues/1078)|65.00%|Easy|

|1077|Project Employees III * $|78.00%|Medium|

|1076|Project Employees II * $|52.80%|Easy|

|1075|Project Employees I * $|66.20%|Easy|

|1074|[Number of Submatrices That Sum to Target](https://github.com/grandyang/leetcode/issues/1074)|62.00%|Hard|

|1073|[Adding Two Negabinary Numbers](https://github.com/grandyang/leetcode/issues/1073)|34.80%|Medium|

|1072|[Flip Columns For Maximum Number of Equal Rows](https://github.com/grandyang/leetcode/issues/1072)|61.60%|Medium|

|1071|[Greatest Common Divisor of Strings](https://github.com/grandyang/leetcode/issues/1071)|51.50%|Easy|

|1070|Product Sales Analysis III * $|49.90%|Medium|

|1069|Product Sales Analysis II * $|83.30%|Easy|

|1068|Product Sales Analysis I * $|82.10%|Easy|

|1067|Digit Count in Range  $|41.60%|Hard|

|1066|Campus Bikes II  $|54.20%|Medium|

|1065|Index Pairs of a String  $|61.00%|Easy|

|1064|Fixed Point  $|64.90%|Easy|

|1063|Number of Valid Subarrays  $|72.10%|Hard|

|1062|Longest Repeating Substring  $|58.40%|Medium|

|1061|Lexicographically Smallest Equivalent String  $|66.90%|Medium|

|1060|Missing Element in Sorted Array  $|54.80%|Medium|

|1059|All Paths from Source Lead to Destination  $|43.00%|Medium|

|1058|Minimize Rounding Error to Meet Target  $|43.70%|Medium|

|1057|[Campus Bikes ](https://github.com/grandyang/leetcode/issues/1057) $|57.80%|Medium|

|1056|[Confusing Number ](https://github.com/grandyang/leetcode/issues/1056) $|47.00%|Easy|

|1055|[Shortest Way to Form String ](https://github.com/grandyang/leetcode/issues/1055) $|57.20%|Medium|

|1054|[Distant Barcodes](https://github.com/grandyang/leetcode/issues/1054)|44.20%|Medium|

|1053|[Previous Permutation With One Swap](https://github.com/grandyang/leetcode/issues/1053)|51.20%|Medium|

|1052|[Grumpy Bookstore Owner](https://github.com/grandyang/leetcode/issues/1052)|55.90%|Medium|

|1051|[Height Checker](https://github.com/grandyang/leetcode/issues/1051)|72.10%|Easy|

|1050|Actors and Directors Who Cooperated At Least Three Times * $|72.40%|Easy|

|1049|[Last Stone Weight II](https://github.com/grandyang/leetcode/issues/1049)|45.40%|Medium|

|1048|[Longest String Chain](https://github.com/grandyang/leetcode/issues/1048)|55.50%|Medium|

|1047|[Remove All Adjacent Duplicates In String](https://github.com/grandyang/leetcode/issues/1047)|70.90%|Easy|

|1046|[Last Stone Weight](https://github.com/grandyang/leetcode/issues/1046)|62.40%|Easy|

|1045|Customers Who Bought All Products * $|68.40%|Medium|

|1044|[Longest Duplicate Substring](https://github.com/grandyang/leetcode/issues/1044)|31.40%|Hard|

|1043|[Partition Array for Maximum Sum](https://github.com/grandyang/leetcode/issues/1043)|67.10%|Medium|

|1042|[Flower Planting With No Adjacent](https://github.com/grandyang/leetcode/issues/1042)|48.80%|Medium|

|1041|[Robot Bounded In Circle](https://github.com/grandyang/leetcode/issues/1041)|55.00%|Medium|

|1040|[Moving Stones Until Consecutive II](https://github.com/grandyang/leetcode/issues/1040)|54.10%|Medium|

|1039|[Minimum Score Triangulation of Polygon](https://github.com/grandyang/leetcode/issues/1039)|50.10%|Medium|

|1038|[Binary Search Tree to Greater Sum Tree](https://github.com/grandyang/leetcode/issues/1038)|82.30%|Medium|

|1037|[Valid Boomerang](https://github.com/grandyang/leetcode/issues/1037)|37.80%|Easy|

|1036|[Escape a Large Maze](https://github.com/grandyang/leetcode/issues/1036)|34.50%|Hard|

|1035|[Uncrossed Lines](https://github.com/grandyang/leetcode/issues/1035)|56.10%|Medium|

|1034|[Coloring A Border](https://github.com/grandyang/leetcode/issues/1034)|45.70%|Medium|

|1033|[Moving Stones Until Consecutive](https://github.com/grandyang/leetcode/issues/1033)|43.20%|Easy|

|1032|[Stream of Characters](https://github.com/grandyang/leetcode/issues/1032)|48.60%|Hard|

|1031|[Maximum Sum of Two Non-Overlapping Subarrays](https://github.com/grandyang/leetcode/issues/1031)|58.90%|Medium|

|1030|[Matrix Cells in Distance Order](https://github.com/grandyang/leetcode/issues/1030)|66.90%|Easy|

|1029|[Two City Scheduling](https://github.com/grandyang/leetcode/issues/1029)|57.90%|Medium|

|1028|[Recover a Tree From Preorder Traversal](https://github.com/grandyang/leetcode/issues/1028)|70.90%|Hard|

|1027|[Longest Arithmetic Subsequence](https://github.com/grandyang/leetcode/issues/1027)|49.80%|Medium|

|1026|[Maximum Difference Between Node and Ancestor](https://github.com/grandyang/leetcode/issues/1026)|69.40%|Medium|

|1025|[Divisor Game](https://github.com/grandyang/leetcode/issues/1025)|66.20%|Easy|

|1024|[Video Stitching](https://github.com/grandyang/leetcode/issues/1024)|49.00%|Medium|

|1023|[Camelcase Matching](https://github.com/grandyang/leetcode/issues/1023)|57.40%|Medium|

|1022|[Sum of Root To Leaf Binary Numbers](https://github.com/grandyang/leetcode/issues/1022)|71.50%|Easy|

|1021|[Remove Outermost Parentheses](https://github.com/grandyang/leetcode/issues/1021)|79.00%|Easy|

|1020|[Number of Enclaves](https://github.com/grandyang/leetcode/issues/1020)|58.90%|Medium|

|1019|[Next Greater Node In Linked List](https://github.com/grandyang/leetcode/issues/1019)|58.20%|Medium|

|1018|[Binary Prefix Divisible By 5](https://github.com/grandyang/leetcode/issues/1018)|47.80%|Easy|

|1017|[Convert to Base -2](https://github.com/grandyang/leetcode/issues/1017)|59.60%|Medium|

|1016|[Binary String With Substrings Representing 1 To N](https://github.com/grandyang/leetcode/issues/1016)|58.90%|Medium|

|1015|[Smallest Integer Divisible by K](https://github.com/grandyang/leetcode/issues/1015)|41.80%|Medium|

|1014|[Best Sightseeing Pair](https://github.com/grandyang/leetcode/issues/1014)|52.90%|Medium|

|1013|[Partition Array Into Three Parts With Equal Sum](https://github.com/grandyang/leetcode/issues/1013)|49.10%|Easy|

|1012|[Numbers With Repeated Digits](https://github.com/grandyang/leetcode/issues/1012)|37.80%|Hard|

|1011|[Capacity To Ship Packages Within D Days](https://github.com/grandyang/leetcode/issues/1011)|59.70%|Medium|

|1010|[Pairs of Songs With Total Durations Divisible by 60](https://github.com/grandyang/leetcode/issues/1010)|50.10%|Medium|

|1009|[Complement of Base 10 Integer](https://github.com/grandyang/leetcode/issues/1009)|61.50%|Easy|

|1008|[Construct Binary Search Tree from Preorder Traversal](https://github.com/grandyang/leetcode/issues/1008)|78.80%|Medium|

|1007|[Minimum Domino Rotations For Equal Row](https://github.com/grandyang/leetcode/issues/1007)|50.90%|Medium|

|1006|[Clumsy Factorial](https://github.com/grandyang/leetcode/issues/1006)|53.70%|Medium|

|1005|[Maximize Sum Of Array After K Negations](https://github.com/grandyang/leetcode/issues/1005)|52.40%|Easy|

|1004|[Max Consecutive Ones III](https://github.com/grandyang/leetcode/issues/1004)|60.50%|Medium|

|1003|[Check If Word Is Valid After Substitutions](https://github.com/grandyang/leetcode/issues/1003)|56.10%|Medium|

|1002|[Find Common Characters](https://github.com/grandyang/leetcode/issues/1002)|68.10%|Easy|

|1001|[Grid Illumination](https://github.com/grandyang/leetcode/issues/1001)|36.60%|Hard|

|1000|[Minimum Cost to Merge Stones](https://github.com/grandyang/leetcode/issues/1000)|40.40%|Hard|

|999|[Available Captures for Rook](https://github.com/grandyang/leetcode/issues/999)|66.80%|Easy|

|998|[Maximum Binary Tree II](https://github.com/grandyang/leetcode/issues/998)|63.70%|Medium|

|997|[Find the Town Judge](https://github.com/grandyang/leetcode/issues/997)|49.80%|Easy|

|996|[Number of Squareful Arrays](https://github.com/grandyang/leetcode/issues/996)|48.00%|Hard|

|995|[Minimum Number of K Consecutive Bit Flips](https://github.com/grandyang/leetcode/issues/995)|49.60%|Hard|

|994|[Rotting Oranges](https://github.com/grandyang/leetcode/issues/994)|49.60%|Medium|

|993|[Cousins in Binary Tree](https://github.com/grandyang/leetcode/issues/993)|52.20%|Easy|

|992|[Subarrays with K Different Integers](https://github.com/grandyang/leetcode/issues/992)|50.40%|Hard|

|991|[Broken Calculator](https://github.com/grandyang/leetcode/issues/991)|46.40%|Medium|

|990|[Satisfiability of Equality Equations](https://github.com/grandyang/leetcode/issues/990)|46.50%|Medium|

|989|[Add to Array-Form of Integer](https://github.com/grandyang/leetcode/issues/989)|44.70%|Easy|

|988|[Smallest String Starting From Leaf](https://github.com/grandyang/leetcode/issues/988)|46.60%|Medium|

|987|[Vertical Order Traversal of a Binary Tree](https://github.com/grandyang/leetcode/issues/987)|37.60%|Medium|

|986|[Interval List Intersections](https://github.com/grandyang/leetcode/issues/986)|68.10%|Medium|

|985|[Sum of Even Numbers After Queries](https://github.com/grandyang/leetcode/issues/985)|60.70%|Easy|

|984|[String Without AAA or BBB](https://github.com/grandyang/leetcode/issues/984)|38.50%|Medium|

|983|[Minimum Cost For Tickets](https://github.com/grandyang/leetcode/issues/983)|62.60%|Medium|

|982|[Triples with Bitwise AND Equal To Zero](https://github.com/grandyang/leetcode/issues/982)|56.10%|Hard|

|981|[Time Based Key-Value Store](https://github.com/grandyang/leetcode/issues/981)|54.00%|Medium|

|980|[Unique Paths III](https://github.com/grandyang/leetcode/issues/980)|77.10%|Hard|

|979|[Distribute Coins in Binary Tree](https://github.com/grandyang/leetcode/issues/979)|69.30%|Medium|

|978|[Longest Turbulent Subarray](https://github.com/grandyang/leetcode/issues/978)|46.60%|Medium|

|977|[Squares of a Sorted Array](https://github.com/grandyang/leetcode/issues/977)|72.40%|Easy|

|976|[Largest Perimeter Triangle](https://github.com/grandyang/leetcode/issues/976)|58.50%|Easy|

|975|[Odd Even Jump](https://github.com/grandyang/leetcode/issues/975)|41.70%|Hard|

|974|[Subarray Sums Divisible by K](https://github.com/grandyang/leetcode/issues/974)|50.30%|Medium|

|973|[K Closest Points to Origin](https://github.com/grandyang/leetcode/issues/973)|64.40%|Medium|

|972|[Equal Rational Numbers](https://github.com/grandyang/leetcode/issues/972)|41.80%|Hard|

|971|[Flip Binary Tree To Match Preorder Traversal](https://github.com/grandyang/leetcode/issues/971)|46.10%|Medium|

|970|[Powerful Integers](https://github.com/grandyang/leetcode/issues/970)|39.90%|Easy|

|969|[Pancake Sorting](https://github.com/grandyang/leetcode/issues/969)|68.40%|Medium|

|968|[Binary Tree Cameras](https://github.com/grandyang/leetcode/issues/968)|38.40%|Hard|

|967|[Numbers With Same Consecutive Differences](https://github.com/grandyang/leetcode/issues/967)|44.30%|Medium|

|966|[Vowel Spellchecker](https://github.com/grandyang/leetcode/issues/966)|47.70%|Medium|

|965|[Univalued Binary Tree](https://github.com/grandyang/leetcode/issues/965)|67.60%|Easy|

|964|[Least Operators to Express Number](https://github.com/grandyang/leetcode/issues/964)|44.70%|Hard|

|963|[Minimum Area Rectangle II](https://github.com/grandyang/leetcode/issues/963)|51.60%|Medium|

|962|[Maximum Width Ramp](https://github.com/grandyang/leetcode/issues/962)|46.00%|Medium|

|961|[N-Repeated Element in Size 2N Array](https://github.com/grandyang/leetcode/issues/961)|74.20%|Easy|

|960|[Delete Columns to Make Sorted III](https://github.com/grandyang/leetcode/issues/960)|54.00%|Hard|

|959|[Regions Cut By Slashes](https://github.com/grandyang/leetcode/issues/959)|66.70%|Medium|

|958|[Check Completeness of a Binary Tree](https://github.com/grandyang/leetcode/issues/958)|52.30%|Medium|

|957|[Prison Cells After N Days](https://github.com/grandyang/leetcode/issues/957)|40.30%|Medium|

|956|[Tallest Billboard](https://github.com/grandyang/leetcode/issues/956)|39.70%|Hard|

|955|[Delete Columns to Make Sorted II](https://github.com/grandyang/leetcode/issues/955)|33.40%|Medium|

|954|[Array of Doubled Pairs](https://github.com/grandyang/leetcode/issues/954)|35.30%|Medium|

|953|[Verifying an Alien Dictionary](https://github.com/grandyang/leetcode/issues/953)|52.90%|Easy|

|952|[Largest Component Size by Common Factor](https://github.com/grandyang/leetcode/issues/952)|36.00%|Hard|

|951|[Flip Equivalent Binary Trees](https://github.com/grandyang/leetcode/issues/951)|65.50%|Medium|

|950|[Reveal Cards In Increasing Order](https://github.com/grandyang/leetcode/issues/950)|75.00%|Medium|

|949|[Largest Time for Given Digits](https://github.com/grandyang/leetcode/issues/949)|36.30%|Medium|

|948|[Bag of Tokens](https://github.com/grandyang/leetcode/issues/948)|46.20%|Medium|

|947|[Most Stones Removed with Same Row or Column](https://github.com/grandyang/leetcode/issues/947)|55.30%|Medium|

|946|[Validate Stack Sequences](https://github.com/grandyang/leetcode/issues/946)|63.10%|Medium|

|945|[Minimum Increment to Make Array Unique](https://github.com/grandyang/leetcode/issues/945)|46.50%|Medium|

|944|[Delete Columns to Make Sorted](https://github.com/grandyang/leetcode/issues/944)|70.90%|Easy|

|943|[Find the Shortest Superstring](https://github.com/grandyang/leetcode/issues/943)|43.20%|Hard|

|942|[DI String Match](https://github.com/grandyang/leetcode/issues/942)|73.20%|Easy|

|941|[Valid Mountain Array](https://github.com/grandyang/leetcode/issues/941)|32.20%|Easy|

|940|[Distinct Subsequences II](https://github.com/grandyang/leetcode/issues/940)|41.50%|Hard|

|939|[Minimum Area Rectangle](https://github.com/grandyang/leetcode/issues/939)|52.00%|Medium|

|938|[Range Sum of BST](https://github.com/grandyang/leetcode/issues/938)|79.90%|Easy|

|937|[Reorder Data in Log Files](https://github.com/grandyang/leetcode/issues/937)|53.70%|Easy|

|936|[Stamping The Sequence](https://github.com/grandyang/leetcode/issues/936)|38.10%|Hard|

|935|[Knight Dialer](https://github.com/grandyang/leetcode/issues/935)|43.80%|Medium|

|934|[Shortest Bridge](https://github.com/grandyang/leetcode/issues/934)|46.50%|Medium|

|933|[Number of Recent Calls](https://github.com/grandyang/leetcode/issues/933)|70.90%|Easy|

|932|[Beautiful Array](https://github.com/grandyang/leetcode/issues/932)|57.10%|Medium|

|931|[Minimum Falling Path Sum](https://github.com/grandyang/leetcode/issues/931)|61.30%|Medium|

|930|[Binary Subarrays With Sum](https://github.com/grandyang/leetcode/issues/930)|41.40%|Medium|

|929|[Unique Email Addresses](https://github.com/grandyang/leetcode/issues/929)|67.60%|Easy|

|928|[Minimize Malware Spread II](https://github.com/grandyang/leetcode/issues/928)|40.10%|Hard|

|927|[Three Equal Parts](https://github.com/grandyang/leetcode/issues/927)|32.80%|Hard|

|926|[Flip String to Monotone Increasing](https://github.com/grandyang/leetcode/issues/926)|51.60%|Medium|

|925|[Long Pressed Name](https://github.com/grandyang/leetcode/issues/925)|45.00%|Easy|

|924|[Minimize Malware Spread](https://github.com/grandyang/leetcode/issues/924)|41.70%|Hard|

|923|[3Sum With Multiplicity](https://github.com/grandyang/leetcode/issues/923)|35.30%|Medium|

|922|[Sort Array By Parity II](https://github.com/grandyang/leetcode/issues/922)|68.30%|Easy|

|921|[Minimum Add to Make Parentheses Valid](https://github.com/grandyang/leetcode/issues/921)|72.30%|Medium|

|920|[Number of Music Playlists](https://github.com/grandyang/leetcode/issues/920)|45.70%|Hard|

|919|[Complete Binary Tree Inserter](https://github.com/grandyang/leetcode/issues/919)|55.70%|Medium|

|918|[Maximum Sum Circular Subarray](https://github.com/grandyang/leetcode/issues/918)|33.20%|Medium|

|917|[Reverse Only Letters](https://github.com/grandyang/leetcode/issues/917)|56.30%|Easy|

|916|[Word Subsets](https://github.com/grandyang/leetcode/issues/916)|45.90%|Medium|

|915|[Partition Array into Disjoint Intervals](https://github.com/grandyang/leetcode/issues/915)|43.90%|Medium|

|914|[X of a Kind in a Deck of Cards](https://github.com/grandyang/leetcode/issues/914)|34.00%|Easy|

|913|[Cat and Mouse](https://github.com/grandyang/leetcode/issues/913)|29.90%|Hard|

|912|[Sort an Array](https://github.com/grandyang/leetcode/issues/912)|62.90%|Medium|

|911|[Online Election](https://github.com/grandyang/leetcode/issues/911)|48.30%|Medium|

|910|[Smallest Range II](https://github.com/grandyang/leetcode/issues/910)|24.90%|Medium|

|909|[Snakes and Ladders](https://github.com/grandyang/leetcode/issues/909)|36.10%|Easy|

|908|[Smallest Range I](https://github.com/grandyang/leetcode/issues/908)|65.00%|Easy|

|907|[Sum of Subarray Minimums](https://github.com/grandyang/leetcode/issues/907)|29.40%|Medium|

|906|[Super Palindromes](https://github.com/grandyang/leetcode/issues/906)|30.80%|Hard|

|905|[Sort Array By Parity](https://github.com/grandyang/leetcode/issues/905)|72.60%|Easy|

|904|[Fruit Into Baskets](https://github.com/grandyang/leetcode/issues/904)|41.70%|Medium|

|903|[Valid Permutations for DI Sequence](https://github.com/grandyang/leetcode/issues/903)|45.10%|Hard|

|902|[Numbers At Most N Given Digit Set](https://github.com/grandyang/leetcode/issues/902)|28.80%|Hard|

|901|[Online Stock Span](https://github.com/grandyang/leetcode/issues/901)|49.90%|Medium|

|900|[RLE Iterator](https://github.com/grandyang/leetcode/issues/900)|50.50%|Medium|

|899|[Orderly Queue](https://github.com/grandyang/leetcode/issues/899)|47.70%|Hard|

|898|[Bitwise ORs of Subarrays](https://github.com/grandyang/leetcode/issues/898)|34.70%|Medium|

|897|[Increasing Order Search Tree](https://github.com/grandyang/leetcode/issues/897)|65.20%|Easy|

|896|[Monotonic Array](https://github.com/grandyang/leetcode/issues/896)|55.40%|Easy|

|895|[Maximum Frequency Stack](https://github.com/grandyang/leetcode/issues/895)|56.70%|Hard|

|894|[All Possible Full Binary Trees](https://github.com/grandyang/leetcode/issues/894)|71.30%|Medium|

|893|[Groups of Special-Equivalent Strings](https://github.com/grandyang/leetcode/issues/893)|63.00%|Easy|

|892|[Surface Area of 3D Shapes](https://github.com/grandyang/leetcode/issues/892)|56.10%|Easy|

|891|[Sum of Subsequence Widths](https://github.com/grandyang/leetcode/issues/891)|29.20%|Hard|

|890|[Find and Replace Pattern](https://github.com/grandyang/leetcode/issues/890)|71.30%|Medium|

|889|[Construct Binary Tree from Preorder and Postorder Traversal](https://github.com/grandyang/leetcode/issues/889)|60.70%|Medium|

|888|[Fair Candy Swap](https://github.com/grandyang/leetcode/issues/888)|56.90%|Easy|

|887|[Super Egg Drop](https://github.com/grandyang/leetcode/issues/887)|24.90%|Hard|

|886|[Possible Bipartition](https://github.com/grandyang/leetcode/issues/886)|40.90%|Medium|

|885|[Spiral Matrix III](https://github.com/grandyang/leetcode/issues/885)|64.80%|Medium|

|884|[Uncommon Words from Two Sentences](https://github.com/grandyang/leetcode/issues/884)|60.90%|Easy|

|883|[Projection Area of 3D Shapes](https://github.com/grandyang/leetcode/issues/883)|65.90%|Easy|

|882|[Reachable Nodes In Subdivided Graph](https://github.com/grandyang/leetcode/issues/882)|38.20%|Hard|

|881|[Boats to Save People](https://github.com/grandyang/leetcode/issues/881)|44.10%|Medium|

|880|[Decoded String at Index](https://github.com/grandyang/leetcode/issues/880)|23.00%|Medium|

|879|[Profitable Schemes](https://github.com/grandyang/leetcode/issues/879)|36.20%|Hard|

|878|[Nth Magical Number](https://github.com/grandyang/leetcode/issues/878)|25.40%|Hard|

|877|[Stone Game](https://github.com/grandyang/leetcode/issues/877)|61.10%|Medium|

|876|[Middle of the Linked List](https://github.com/grandyang/leetcode/issues/876)|63.80%|Easy|

|875|[Koko Eating Bananas](https://github.com/grandyang/leetcode/issues/875)|45.90%|Medium|

|874|[Walking Robot Simulation](https://github.com/grandyang/leetcode/issues/874)|31.70%|Easy|

|873|[Length of Longest Fibonacci Subsequence](https://github.com/grandyang/leetcode/issues/873)|46.00%|Medium|

|872|[Leaf-Similar Trees](https://github.com/grandyang/leetcode/issues/872)|63.10%|Easy|

|871|[Minimum Number of Refueling Stops](https://github.com/grandyang/leetcode/issues/871)|28.70%|Hard|

|870|[Advantage Shuffle](https://github.com/grandyang/leetcode/issues/870)|42.20%|Medium|

|869|[Reordered Power of 2](https://github.com/grandyang/leetcode/issues/869)|50.60%|Medium|

|868|[Binary Gap](https://github.com/grandyang/leetcode/issues/868)|59.30%|Easy|

|867|[Transpose Matrix](https://github.com/grandyang/leetcode/issues/867)|63.90%|Easy|

|866|[Prime Palindrome](https://github.com/grandyang/leetcode/issues/866)|20.00%|Medium|

|865|[Smallest Subtree with all the Deepest Nodes](https://github.com/grandyang/leetcode/issues/865)|55.40%|Medium|

|864|[Shortest Path to Get All Keys](https://github.com/grandyang/leetcode/issues/864)|35.70%|Hard|

|863|[All Nodes Distance K in Binary Tree](https://github.com/grandyang/leetcode/issues/863)|46.80%|Medium|

|862|[Shortest Subarray with Sum at Least K](https://github.com/grandyang/leetcode/issues/862)|22.00%|Hard|

|861|[Score After Flipping Matrix](https://github.com/grandyang/leetcode/issues/861)|69.30%|Medium|

|860|[Lemonade Change](https://github.com/grandyang/leetcode/issues/860)|50.20%|Easy|

|859|[Buddy Strings](https://github.com/grandyang/leetcode/issues/859)|27.60%|Easy|

|858|[Mirror Reflection](https://github.com/grandyang/leetcode/issues/858)|52.00%|Medium|

|857|[Minimum Cost to Hire K Workers](https://github.com/grandyang/leetcode/issues/857)|47.30%|Hard|

|856|[Score of Parentheses](https://github.com/grandyang/leetcode/issues/856)|55.90%|Medium|

|855|[Exam Room](https://github.com/grandyang/leetcode/issues/855)|38.10%|Medium|

|854|[K-Similar Strings](https://github.com/grandyang/leetcode/issues/854)|33.20%|Hard|

|853|[Car Fleet](https://github.com/grandyang/leetcode/issues/853)|39.30%|Medium|

|852|[Peak Index in a Mountain Array](https://github.com/grandyang/leetcode/issues/852)|68.50%|Easy|

|851|[Loud and Rich](https://github.com/grandyang/leetcode/issues/851)|47.40%|Medium|

|850|[Rectangle Area II](https://github.com/grandyang/leetcode/issues/850)|44.00%|Hard|

|849|[Maximize Distance to Closest Person](https://github.com/grandyang/leetcode/issues/849)|40.40%|Easy|

|848|[Shifting Letters](https://github.com/grandyang/leetcode/issues/848)|39.90%|Medium|

|847|[Shortest Path Visiting All Nodes](https://github.com/grandyang/leetcode/issues/847)|45.90%|Hard|

|846|[Hand of Straights](https://github.com/grandyang/leetcode/issues/846)|48.60%|Medium|

|845|[Longest Mountain in Array](https://github.com/grandyang/leetcode/issues/845)|34.00%|Medium|

|844|[Backspace String Compare](https://github.com/grandyang/leetcode/issues/844)|45.50%|Easy|

|843|[Guess the Word](https://github.com/grandyang/leetcode/issues/843)|42.60%|Hard|

|842|[Split Array into Fibonacci Sequence](https://github.com/grandyang/leetcode/issues/842)|34.60%|Medium|

|841|[Keys and Rooms](https://github.com/grandyang/leetcode/issues/841)|59.70%|Medium|

|840|[Magic Squares In Grid](https://github.com/grandyang/leetcode/issues/840)|35.10%|Easy|

|839|[Similar String Groups](https://github.com/grandyang/leetcode/issues/839)|33.50%|Hard|

|838|[Push Dominoes](https://github.com/grandyang/leetcode/issues/838)|42.80%|Medium|

|837|[New 21 Game](https://github.com/grandyang/leetcode/issues/837)|29.50%|Medium|

|836|[Rectangle Overlap](https://github.com/grandyang/leetcode/issues/836)|45.50%|Easy|

|835|[Image Overlap](https://github.com/grandyang/leetcode/issues/835)|50.30%|Medium|

|834|[Sum of Distances in Tree](https://github.com/grandyang/leetcode/issues/834)|38.10%|Hard|

|833|[Find And Replace in String](https://github.com/grandyang/leetcode/issues/833)|44.50%|Medium|

|832|[Flipping an Image](https://github.com/grandyang/leetcode/issues/832)|71.30%|Easy|

|831|[Masking Personal Information](https://github.com/grandyang/leetcode/issues/831)|41.50%|Medium|

|830|[Positions of Large Groups](https://github.com/grandyang/leetcode/issues/830)|47.40%|Easy|

|829|[Consecutive Numbers Sum](https://github.com/grandyang/leetcode/issues/829)|32.10%|Hard|

|828|[Unique Letter String](https://github.com/grandyang/leetcode/issues/828)|38.10%|Hard|

|827|[Making A Large Island](https://github.com/grandyang/leetcode/issues/827)|42.10%|Hard|

|826|[Most Profit Assigning Work](https://github.com/grandyang/leetcode/issues/826)|34.70%|Medium|

|825|[Friends Of Appropriate Ages](https://github.com/grandyang/leetcode/issues/825)|35.00%|Medium|

|824|[Goat Latin](https://github.com/grandyang/leetcode/issues/824)|56.70%|Easy|

|823|[Binary Trees With Factors](https://github.com/grandyang/leetcode/issues/823)|31.50%|Medium|

|822|[Card Flipping Game](https://github.com/grandyang/leetcode/issues/822)|39.70%|Medium|

|821|[Shortest Distance to a Character](https://github.com/grandyang/leetcode/issues/821)|62.60%|Easy|

|820|[Short Encoding of Words](https://github.com/grandyang/leetcode/issues/820)|46.00%|Medium|

|819|[Most Common Word](https://github.com/grandyang/leetcode/issues/819)|41.50%|Easy|

|818|[Race Car](https://github.com/grandyang/leetcode/issues/818)|34.00%|Hard|

|817|[Linked List Components](https://github.com/grandyang/leetcode/issues/817)|51.90%|Medium|

|816|[Ambiguous Coordinates](https://github.com/grandyang/leetcode/issues/816)|42.40%|Medium|

|815|[Bus Routes](https://github.com/grandyang/leetcode/issues/815)|36.10%|Hard|

|814|[Binary Tree Pruning](https://github.com/grandyang/leetcode/issues/814)|68.30%|Medium|

|813|[Largest Sum of Averages](https://github.com/grandyang/leetcode/issues/813)|42.40%|Medium|

|812|[Largest Triangle Area](https://github.com/grandyang/leetcode/issues/812)|53.80%|Easy|

|811|[Subdomain Visit Count](https://github.com/grandyang/leetcode/issues/811)|61.50%|Easy|

|810|[Chalkboard XOR Game](https://github.com/grandyang/leetcode/issues/810)|41.90%|Hard|

|809|[Expressive Words](https://github.com/grandyang/leetcode/issues/809)|39.50%|Medium|

|808|[Soup Servings](https://github.com/grandyang/leetcode/issues/808)|33.60%|Medium|

|807|[Max Increase to Keep City Skyline](https://github.com/grandyang/leetcode/issues/807)|79.60%|Medium|

|806|[Number of Lines To Write String](https://github.com/grandyang/leetcode/issues/806)|62.10%|Easy|

|805|[Split Array With Same Average](https://github.com/grandyang/leetcode/issues/805)|21.00%|Hard|

|804|[Unique Morse Code Words](https://github.com/grandyang/leetcode/issues/804)|71.30%|Easy|

|803|[Bricks Falling When Hit](https://github.com/grandyang/leetcode/issues/803)|22.90%|Hard|

|802|[Find Eventual Safe States](https://github.com/grandyang/leetcode/issues/802)|39.20%|Medium|

|801|[Minimum Swaps To Make Sequences Increasing](https://github.com/grandyang/leetcode/issues/801)|31.00%|Medium|

|800|[Similar RGB Color](https://github.com/grandyang/leetcode/issues/800) $|54.50%|Easy|

|799|[Champagne Tower](https://github.com/grandyang/leetcode/issues/799)|29.90%|Medium|

|798|[Smallest Rotation with Highest Score](https://github.com/grandyang/leetcode/issues/798)|34.30%|Hard|

|797|[All Paths From Source to Target](https://github.com/grandyang/leetcode/issues/797)|67.40%|Medium|

|796|[Rotate String](https://github.com/grandyang/leetcode/issues/796)|49.60%|Easy|

|795|[Number of Subarrays with Bounded Maximum](https://github.com/grandyang/leetcode/issues/795)|41.60%|Medium|

|794|[Valid Tic-Tac-Toe State](https://github.com/grandyang/leetcode/issues/794)|27.80%|Medium|

|793|[Preimage Size of Factorial Zeroes Function](https://github.com/grandyang/leetcode/issues/793)|40.80%|Hard|

|792|[Number of Matching Subsequences](https://github.com/grandyang/leetcode/issues/792)|37.30%|Medium|

|791|[Custom Sort String](https://github.com/grandyang/leetcode/issues/791)|59.40%|Medium|

|790|[Domino and Tromino Tiling](https://github.com/grandyang/leetcode/issues/790)|32.80%|Medium|

|789|[Escape The Ghosts](https://github.com/grandyang/leetcode/issues/789)|51.00%|Medium|

|788|[Rotated Digits](https://github.com/grandyang/leetcode/issues/788)|51.00%|Easy|

|787|[Cheapest Flights Within K Stops](https://github.com/grandyang/leetcode/issues/787)|29.90%|Medium|

|786|[K-th Smallest Prime Fraction](https://github.com/grandyang/leetcode/issues/786)|32.50%|Hard|

|785|[Is Graph Bipartite](https://github.com/grandyang/leetcode/issues/785)|38.50%|Medium|

|784|[Letter Case Permutation](https://github.com/grandyang/leetcode/issues/784)|53.00%|Easy|

|783|[Minimum Distance Between BST Nodes](https://github.com/grandyang/leetcode/issues/783)|47.80%|Easy|

|782|[Transform to Chessboard](https://github.com/grandyang/leetcode/issues/782)|37.50%|Hard|

|781|[Rabbits in Forest](https://github.com/grandyang/leetcode/issues/781)|49.80%|Medium|

|780|[Reaching Points](https://github.com/grandyang/leetcode/issues/780)|23.90%|Hard|

|779|[K-th Symbol in Grammar](https://github.com/grandyang/leetcode/issues/779)|37.30%|Medium|

|778|[Swim in Rising Water](https://github.com/grandyang/leetcode/issues/778)|44.60%|Hard|

|777|[Swap Adjacent in LR String](https://github.com/grandyang/leetcode/issues/777)|28.90%|Medium|

|776|[Split BST](https://github.com/grandyang/leetcode/issues/776) $|49.90%|Medium|

|775|[Global and Local Inversions](https://github.com/grandyang/leetcode/issues/775)|33.60%|Medium|

|774|[Minimize Max Distance to Gas Station](https://github.com/grandyang/leetcode/issues/774) $|32.80%|Hard|

|773|[Sliding Puzzle](https://github.com/grandyang/leetcode/issues/773)|46.50%|Hard|

|772|[Basic Calculator III](https://github.com/grandyang/leetcode/issues/772) $|40.10%|Hard|

|771|[Jewels and Stones](https://github.com/grandyang/leetcode/issues/771)|81.90%|Easy|

|770|Basic Calculator IV|42.10%|Hard|

|769|[Max Chunks To Make Sorted](https://github.com/grandyang/leetcode/issues/769)|48.00%|Medium|

|768|[Max Chunks To Make Sorted II](https://github.com/grandyang/leetcode/issues/768)|43.20%|Hard|

|767|[Reorganize String](https://github.com/grandyang/leetcode/issues/767)|36.50%|Medium|

|766|[Toeplitz Matrix](https://github.com/grandyang/leetcode/issues/766)|57.90%|Easy|

|765|[Couples Holding Hands](https://github.com/grandyang/leetcode/issues/765)|48.50%|Hard|

|764|[Largest Plus Sign](https://github.com/grandyang/leetcode/issues/764)|39.20%|Medium|

|763|[Partition Labels](https://github.com/grandyang/leetcode/issues/763)|64.10%|Medium|

|762|[Prime Number of Set Bits in Binary Representation](https://github.com/grandyang/leetcode/issues/762)|55.00%|Easy|

|761|[Special Binary String](https://github.com/grandyang/leetcode/issues/761)|41.00%|Hard|

|760|[Find Anagram Mappings](https://github.com/grandyang/leetcode/issues/760) $|75.60%|Easy|

|759|[Employee Free Time](https://github.com/grandyang/leetcode/issues/759) $|51.90%|Hard|

|758|[Bold Words in String](https://github.com/grandyang/leetcode/issues/758) $|37.90%|Easy|

|757|[Set Intersection Size At Least Two](https://github.com/grandyang/leetcode/issues/757)|34.60%|Hard|

|756|[Pyramid Transition Matrix](https://github.com/grandyang/leetcode/issues/756)|45.50%|Medium|

|755|[Pour Water](https://github.com/grandyang/leetcode/issues/755) $|34.00%|Medium|

|754|[Reach a Number](https://github.com/grandyang/leetcode/issues/754)|26.10%|Medium|

|753|[Cracking the Safe](https://github.com/grandyang/leetcode/issues/753)|39.70%|Hard|

|752|[Open the Lock](https://github.com/grandyang/leetcode/issues/752)|38.20%|Medium|

|751|[IP to CIDR](https://github.com/grandyang/leetcode/issues/751) $|54.80%|Easy|

|750|[Number Of Corner Rectangles](https://github.com/grandyang/leetcode/issues/750) $|51.00%|Medium|

|749|[Contain Virus](https://github.com/grandyang/leetcode/issues/749)|39.60%|Hard|

|748|[Shortest Completing Word](https://github.com/grandyang/leetcode/issues/748)|53.50%|Medium|

|747|[Largest Number At Least Twice of Others](https://github.com/grandyang/leetcode/issues/747)|42.60%|Easy|

|746|[Min Cost Climbing Stairs](https://github.com/grandyang/leetcode/issues/746)|43.60%|Easy|

|745|[Prefix and Suffix Search](https://github.com/grandyang/leetcode/issues/745)|24.50%|Hard|

|744|[Find Smallest Letter Greater Than Target](https://github.com/grandyang/leetcode/issues/744)|45.30%|Easy|

|743|[Network Delay Time](https://github.com/grandyang/leetcode/issues/743)|34.30%|Medium|

|742|[Closest Leaf in a Binary Tree](https://github.com/grandyang/leetcode/issues/742) $|33.20%|Medium|

|741|[Cherry Pickup](https://github.com/grandyang/leetcode/issues/741)|22.50%|Hard|

|740|[Delete and Earn](https://github.com/grandyang/leetcode/issues/740)|42.60%|Medium|

|739|[Daily Temperatures](https://github.com/grandyang/leetcode/issues/739)|53.50%|Medium|

|738|[Monotone Increasing Digits](https://github.com/grandyang/leetcode/issues/738)|41.80%|Medium|

|737|[Sentence Similarity II](https://github.com/grandyang/leetcode/issues/737) $|41.20%|Medium|

|736|[Parse Lisp Expression](https://github.com/grandyang/leetcode/issues/736)|42.00%|Hard|

|735|[Asteroid Collision](https://github.com/grandyang/leetcode/issues/735)|37.60%|Medium|

|734|[Sentence Similarity](https://github.com/grandyang/leetcode/issues/734) $|38.60%|Easy|

|733|[Flood Fill](https://github.com/grandyang/leetcode/issues/733)|49.30%|Easy|

|732|[My Calendar III](https://github.com/grandyang/leetcode/issues/732)|51.30%|Hard|

|731|[My Calendar II](https://github.com/grandyang/leetcode/issues/731)|35.00%|Medium|

|730|[Count Different Palindromic Subsequences](https://github.com/grandyang/leetcode/issues/730)|32.40%|Hard|

|729|[My Calendar I](https://github.com/grandyang/leetcode/issues/729)|40.10%|Medium|

|728|[Self Dividing Numbers](https://github.com/grandyang/leetcode/issues/728)|68.50%|Easy|

|727|[Minimum Window Subsequence](https://github.com/grandyang/leetcode/issues/727)|30.10%|Hard|

|726|[Number of Atoms](https://github.com/grandyang/leetcode/issues/726)|45.00%|Hard|

|725|[Split Linked List in Parts](https://github.com/grandyang/leetcode/issues/725)|50.00%|Medium|

|724|[Find Pivot Index](https://github.com/grandyang/leetcode/issues/724)|41.00%|Easy|

|723|[Candy Crush](https://github.com/grandyang/leetcode/issues/723) $|56.10%|Medium|

|722|[Remove Comments](https://github.com/grandyang/leetcode/issues/722)|26.30%|Medium|

|721|[Accounts Merge](https://github.com/grandyang/leetcode/issues/721)|29.60%|Medium|

|720|[Longest Word in Dictionary](https://github.com/grandyang/leetcode/issues/720)|40.60%|Easy|

|719|[Find K-th Smallest Pair Distance](https://github.com/grandyang/leetcode/issues/719)|26.10%|Hard|

|718|[Maximum Length of Repeated Subarray](https://github.com/grandyang/leetcode/issues/718)|39.90%|Medium|

|717|[1-bit and 2-bit Characters](https://github.com/grandyang/leetcode/issues/717)|50.90%|Easy|

|716|[Max Stack](https://github.com/grandyang/leetcode/issues/716) $|35.50%|Hard|

|715|[Range Module](https://github.com/grandyang/leetcode/issues/715)|31.00%|Hard|

|714|[Best Time to Buy and Sell Stock with Transaction Fee](https://github.com/grandyang/leetcode/issues/714)|41.60%|Medium|

|713|[Subarray Product Less Than K](https://github.com/grandyang/leetcode/issues/713)|32.90%|Medium|

|712|[Minimum ASCII Delete Sum for Two Strings](https://github.com/grandyang/leetcode/issues/712)|50.90%|Medium|

|711|[Number of Distinct Islands II](https://github.com/grandyang/leetcode/issues/711) $|39.40%|Hard|

|710|[Random Pick with Blacklist](https://github.com/grandyang/leetcode/issues/710)|29.80%|Hard|

|709|[To Lower Case](https://github.com/grandyang/leetcode/issues/709)|74.50%|Easy|

|708|[Insert into a Cyclic Sorted List](https://github.com/grandyang/leetcode/issues/708) $|25.50%|Medium|

|707|[Design Linked List](https://github.com/grandyang/leetcode/issues/707)|19.10%|Easy|

|706|[Design HashMap](https://github.com/grandyang/leetcode/issues/706)|49.10%|Easy|

|705|[Design HashSet](https://github.com/grandyang/leetcode/issues/705)|43.60%|Easy|

|704|[Binary Search](https://github.com/grandyang/leetcode/issues/704)|40.10%|Easy|

|703|[Kth Largest Element in a Stream](https://github.com/grandyang/leetcode/issues/703)|39.60%|Easy|

|702|[Search in a Sorted Array of Unknown Size](https://github.com/grandyang/leetcode/issues/702)|43.00%|Medium|

|701|[Insert into a Binary Search Tree](https://github.com/grandyang/leetcode/issues/701)|67.90%|Medium|

|700|[Search in a Binary Search Tree](https://github.com/grandyang/leetcode/issues/700)|62.70%|Easy|

|699|[Falling Squares](https://github.com/grandyang/leetcode/issues/699)|36.80%|Hard|

|698|[Partition to K Equal Sum Subsets](https://github.com/grandyang/leetcode/issues/698)|35.60%|Medium|

|697|[Degree of an Array](https://github.com/grandyang/leetcode/issues/697)|47.90%|Easy|

|696|[Count Binary Substrings](https://github.com/grandyang/leetcode/issues/696)|51.90%|Easy|

|695|[Max Area of Island](https://github.com/grandyang/leetcode/issues/695)|53.30%|Easy|

|694|[Number of Distinct Islands](https://github.com/grandyang/leetcode/issues/694) $|43.90%|Medium|

|693|[Binary Number with Alternating Bits](https://github.com/grandyang/leetcode/issues/693)|54.20%|Easy|

|692|[Top K Frequent Words](https://github.com/grandyang/leetcode/issues/692)|41.70%|Medium|

|691|[Stickers to Spell Word](https://github.com/grandyang/leetcode/issues/691)|32.30%|Hard|

|690|[Employee Importance](https://github.com/grandyang/leetcode/issues/690)|53.60%|Easy|

|689|[Maximum Sum of 3 Non-Overlapping Subarrays](https://github.com/grandyang/leetcode/issues/689)|41.70%|Hard|

|688|[Knight Probability in Chessboard](https://github.com/grandyang/leetcode/issues/688)|38.90%|Medium|

|687|[Longest Univalue Path](https://github.com/grandyang/leetcode/issues/687)|32.90%|Easy|

|686|[Repeated String Match](https://github.com/grandyang/leetcode/issues/686)|31.70%|Easy|

|685|[Redundant Connection II](https://github.com/grandyang/leetcode/issues/685)|28.40%|Hard|

|684|[Redundant Connection](https://github.com/grandyang/leetcode/issues/684)|37.40%|Medium|

|683|[K Empty Slots](https://github.com/grandyang/leetcode/issues/683)|37.00%|Hard|

|682|[Baseball Game](https://github.com/grandyang/leetcode/issues/682)|58.60%|Easy|

|681|[Next Closest Time](https://github.com/grandyang/leetcode/issues/681) $|43.00%|Medium|

|680|[Valid Palindrome II](https://github.com/grandyang/leetcode/issues/680)|31.10%|Easy|

|679|[24 Game](https://github.com/grandyang/leetcode/issues/679)|38.30%|Hard|

|678|[Valid Parenthesis String](https://github.com/grandyang/leetcode/issues/678)|28.30%|Medium|

|677|[Map Sum Pairs](https://github.com/grandyang/leetcode/issues/677)|53.80%|Medium|

|676|[Implement Magic Dictionary](https://github.com/grandyang/leetcode/issues/676)|50.70%|Medium|

|675|[Cut Off Trees for Golf Event](https://github.com/grandyang/leetcode/issues/675)|27.20%|Hard|

|674|[Longest Continuous Increasing Subsequence](https://github.com/grandyang/leetcode/issues/674)|43.20%|Easy|

|673|[Number of Longest Increasing Subsequence](https://github.com/grandyang/leetcode/issues/673)|30.80%|Medium|

|672|[Bulb Switcher II](https://github.com/grandyang/leetcode/issues/672)|47.60%|Medium|

|671|[Second Minimum Node In a Binary Tree](https://github.com/grandyang/leetcode/issues/671)|42.30%|Easy|

|670|[Maximum Swap](https://github.com/grandyang/leetcode/issues/670)|38.40%|Medium|

|669|[Trim a Binary Search Tree](https://github.com/grandyang/leetcode/issues/669)|58.70%|Easy|

|668|[Kth Smallest Number in Multiplication Table](https://github.com/grandyang/leetcode/issues/668)|36.30%|Hard|

|667|[Beautiful Arrangement II](https://github.com/grandyang/leetcode/issues/667)|51.50%|Medium|

|666|[Path Sum IV](https://github.com/grandyang/leetcode/issues/666) $|48.90%|Medium|

|665|[Non-decreasing Array](https://github.com/grandyang/leetcode/issues/665)|21.20%|Easy|

|664|[Strange Printer](https://github.com/grandyang/leetcode/issues/664)|31.10%|Hard|

|663|[Equal Tree Partition](https://github.com/grandyang/leetcode/issues/663) $|36.70%|Medium|

|662|[Maximum Width of Binary Tree](https://github.com/grandyang/leetcode/issues/662)|37.00%|Medium|

|661|[Image Smoother](https://github.com/grandyang/leetcode/issues/661)|46.60%|Easy|

|660|[Remove 9](https://github.com/grandyang/leetcode/issues/660) $|46.10%|Hard|

|659|[Split Array into Consecutive Subsequences](https://github.com/grandyang/leetcode/issues/659)|39.40%|Medium|

|658|[Find K Closest Elements](https://github.com/grandyang/leetcode/issues/658)|36.30%|Medium|

|657|[Judge Route Circle](https://github.com/grandyang/leetcode/issues/657)|69.30%|Easy|

|656|[Coin Path](https://github.com/grandyang/leetcode/issues/656) $|24.60%|Hard|

|655|[Print Binary Tree](https://github.com/grandyang/leetcode/issues/655)|50.80%|Medium|

|654|[Maximum Binary Tree](https://github.com/grandyang/leetcode/issues/654)|70.80%|Medium|

|653|[Two Sum IV - Input is a BST](https://github.com/grandyang/leetcode/issues/653)|50.60%|Easy|

|652|[Find Duplicate Subtrees](https://github.com/grandyang/leetcode/issues/652)|33.20%|Medium|

|651|[4 Keys Keyboard](https://github.com/grandyang/leetcode/issues/651) $|46.70%|Medium|

|650|[2 Keys Keyboard](https://github.com/grandyang/leetcode/issues/650)|42.70%|Medium|

|649|[Dota2 Senate](https://github.com/grandyang/leetcode/issues/649)|35.60%|Medium|

|648|[Replace Words](https://github.com/grandyang/leetcode/issues/648)|48.40%|Medium|

|647|[Palindromic Substrings](https://github.com/grandyang/leetcode/issues/647)|55.70%|Medium|

|646|[Maximum Length of Pair Chain](https://github.com/grandyang/leetcode/issues/646)|47.40%|Medium|

|645|[Set Mismatch](https://github.com/grandyang/leetcode/issues/645)|40.40%|Easy|

|644|[Maximum Average Subarray II](https://github.com/grandyang/leetcode/issues/644) $|20.30%|Hard|

|643|[Maximum Average Subarray I](https://github.com/grandyang/leetcode/issues/643)|38.40%|Easy|

|642|[Design Search Autocomplete System](https://github.com/grandyang/leetcode/issues/642) $|29.40%|Hard|

|641|[Design Circular Deque](https://github.com/grandyang/leetcode/issues/641)|48.00%|Medium|

|640|[Solve the Equation](https://github.com/grandyang/leetcode/issues/640)|39.00%|Medium|

|639|[Decode Ways II](https://github.com/grandyang/leetcode/issues/639)|22.80%|Hard|

|638|[Shopping Offers](https://github.com/grandyang/leetcode/issues/638)|41.50%|Medium|

|637|[Average of Levels in Binary Tree](https://github.com/grandyang/leetcode/issues/637)|55.60%|Easy|

|636|[Exclusive Time of Functions](https://github.com/grandyang/leetcode/issues/636)|40.30%|Medium|

|635|[Design Log Storage System](https://github.com/grandyang/leetcode/issues/635) $|47.70%|Medium|

|634|[Find the Derangement of An Array](https://github.com/grandyang/leetcode/issues/634) $|32.70%|Medium|

|633|[Sum of Square Numbers](https://github.com/grandyang/leetcode/issues/633)|31.60%|Easy|

|632|[Smallest Range](https://github.com/grandyang/leetcode/issues/632)|42.80%|Hard|

|631|[Design Excel Sum Formula](https://github.com/grandyang/leetcode/issues/631) $|25.60%|Hard|

|630|[Course Schedule III](https://github.com/grandyang/leetcode/issues/630)|20.50%|Medium|

|629|[K Inverse Pairs Array](https://github.com/grandyang/leetcode/issues/629)|23.90%|Hard|

|628|[Maximum Product of Three Numbers](https://github.com/grandyang/leetcode/issues/628)|45.40%|Easy|

|627|Swap Salary|67.40%|Easy|

|626|Exchange Seats|49.60%|Medium|

|625|[Minimum Factorization](https://github.com/grandyang/leetcode/issues/625)|29.50%|Medium|

|624|[Maximum Distance in Arrays](https://github.com/grandyang/leetcode/issues/624) $|32.70%|Easy|

|623|[Add One Row to Tree](https://github.com/grandyang/leetcode/issues/623)|48.70%|Medium|

|622|[Design Circular Queue](https://github.com/grandyang/leetcode/issues/622)|36.60%|Medium|

|621|[Task Scheduler](https://github.com/grandyang/leetcode/issues/621)|41.40%|Medium|

|620|Not Boring Movies|59.80%|Easy|

|619|Biggest Single Number  $|36.60%|Easy|

|618|Students Report By Geography  $|40.40%|Hard|

|617|[Merge Two Binary Trees](https://github.com/grandyang/leetcode/issues/617)|69.60%|Easy|

|616|[Add Bold Tag in String](https://github.com/grandyang/leetcode/issues/616) $|37.30%|Medium|

|615|Average Salary: Departments VS Company $|33.00%|Hard|

|614|Second Degree Follower  $|22.70%|Medium|

|613|Shortest Distance in a Line  $|70.60%|Easy|

|612|Shortest Distance in a Plane  $|51.00%|Medium|

|611|[Valid Triangle Number](https://github.com/grandyang/leetcode/issues/611)|38.90%|Medium|

|610|Triangle Judgement $|59.10%|Easy|

|609|[Find Duplicate File in System](https://github.com/grandyang/leetcode/issues/609)|52.50%|Medium|

|608|Tree Node $|54.60%|Medium|

|607|[Sales Person ](https://github.com/grandyang/leetcode/issues/607) $|51.10%|Easy|

|606|[Construct String from Binary Tree](https://github.com/grandyang/leetcode/issues/606)|51.80%|Easy|

|605|[Can Place Flowers](https://github.com/grandyang/leetcode/issues/605)|30.00%|Easy|

|604|[Design Compressed String Iterator](https://github.com/grandyang/leetcode/issues/604) $|31.60%|Easy|

|603|Consecutive Available Seats $|54.50%|Easy|

|602|Friend Requests II: Who Has the Most Friends  $|42.50%|Medium|

|601|Human Traffic of Stadium|33.80%|Hard|

|600|[Non-negative Integers without Consecutive Ones](https://github.com/grandyang/leetcode/issues/600)|27.40%|Hard|

|599|[Minimum Index Sum of Two Lists](https://github.com/grandyang/leetcode/issues/599)|48.00%|Easy|

|598|[Range Addition II](https://github.com/grandyang/leetcode/issues/598)|48.30%|Easy|

|597|Friend Requests I: Overall Acceptance Rate  $|38.40%|Easy|

|596|Classes More Than 5 Students|33.40%|Easy|

|595|[Big Countries](https://github.com/grandyang/leetcode/issues/595)|72.00%|Easy|

|594|[Longest Harmonious Subsequence](https://github.com/grandyang/leetcode/issues/594)|40.00%|Easy|

|593|[Valid Square](https://github.com/grandyang/leetcode/issues/593)|39.20%|Medium|

|592|[Fraction Addition and Subtraction](https://github.com/grandyang/leetcode/issues/592)|47.00%|Medium|

|591|[Tag Validator](https://github.com/grandyang/leetcode/issues/591)|26.40%|Hard|

|590|[N-ary Tree Postorder Traversal](https://github.com/grandyang/leetcode/issues/590)|63.00%|Easy|

|589|[N-ary Tree Preorder Traversal](https://github.com/grandyang/leetcode/issues/589)|63.10%|Easy|

|588|[Design In-Memory File System](https://github.com/grandyang/leetcode/issues/588) $|32.40%|Hard|

|587|[Erect the Fence](https://github.com/grandyang/leetcode/issues/587)|29.90%|Hard|

|586|Customer Placing the Largest Number of Orders  $|62.50%|Easy|

|585|Investments in 2016 $|44.60%|Medium|

|584|Find Customer Referee  $|63.60%|Easy|

|583|[Delete Operation for Two Strings](https://github.com/grandyang/leetcode/issues/583)|44.00%|Medium|

|582|[Kill Process](https://github.com/grandyang/leetcode/issues/582) $|47.70%|Medium|

|581|[Shortest Unsorted Continuous Subarray](https://github.com/grandyang/leetcode/issues/581)|30.10%|Easy|

|580|Count Student Number in Departments  $|40.00%|Medium|

|579|Find Cumulative Salary of an Employee  $|30.90%|Hard|

|578|Get Highest Answer Rate Question  $|33.10%|Medium|

|577|Employee Bonus  $|53.80%|Easy|

|576|[Out of Boundary Paths](https://github.com/grandyang/leetcode/issues/576)|33.10%|Medium|

|575|[Distribute Candies](https://github.com/grandyang/leetcode/issues/575)|59.50%|Easy|

|574|[Winning Candidate ](https://github.com/grandyang/leetcode/issues/574) $|34.50%|Medium|

|573|[Squirrel Simulation](https://github.com/grandyang/leetcode/issues/573) $|51.00%|Medium|

|572|[Subtree of Another Tree](https://github.com/grandyang/leetcode/issues/572)|41.00%|Easy|

|571|Find Median Given Frequency of Numbers  $|44.90%|Hard|

|570|Managers with at Least 5 Direct Reports $|59.00%|Medium|

|569|[Median Employee Salary ](https://github.com/grandyang/leetcode/issues/569) $|41.60%|Hard|

|568|[Maximum Vacation Days](https://github.com/grandyang/leetcode/issues/568) $|39.90%|Hard|

|567|[Permutation in String](https://github.com/grandyang/leetcode/issues/567)|36.30%|Medium|

|566|[Reshape the Matrix](https://github.com/grandyang/leetcode/issues/566)|59.80%|Easy|

|565|[Array Nesting](https://github.com/grandyang/leetcode/issues/565)|50.00%|Medium|

|564|[Find the Closest Palindrome](https://github.com/grandyang/leetcode/issues/564)|16.60%|Hard|

|563|[Binary Tree Tilt](https://github.com/grandyang/leetcode/issues/563)|47.00%|Easy|

|562|[Longest Line of Consecutive One in Matrix](https://github.com/grandyang/leetcode/issues/562) $|38.80%|Medium|

|561|[Array Partition I](https://github.com/grandyang/leetcode/issues/561)|69.80%|Easy|

|560|[Subarray Sum Equals K](https://github.com/grandyang/leetcode/issues/560)|41.80%|Medium|

|559|[Maximum Depth of N-ary Tree](https://github.com/grandyang/leetcode/issues/559)|62.10%|Easy|

|558|[Quad Tree Intersection](https://github.com/grandyang/leetcode/issues/558)|36.40%|Easy|

|557|[Reverse Words in a String III](https://github.com/grandyang/leetcode/issues/557)|61.20%|Easy|

|556|[Next Greater Element III](https://github.com/grandyang/leetcode/issues/556)|27.70%|Medium|

|555|[Split Concatenated Strings](https://github.com/grandyang/leetcode/issues/555) $|30.00%|Medium|

|554|[Brick Wall](https://github.com/grandyang/leetcode/issues/554)|42.70%|Medium|

|553|[Optimal Division](https://github.com/grandyang/leetcode/issues/553)|55.20%|Medium|

|552|[Student Attendance Record II](https://github.com/grandyang/leetcode/issues/552)|28.50%|Hard|

|551|[Student Attendance Record I](https://github.com/grandyang/leetcode/issues/551)|43.90%|Easy|

|549|[Binary Tree Longest Consecutive Sequence II](https://github.com/grandyang/leetcode/issues/549) $|38.10%|Medium|

|548|[Split Array with Equal Sum](https://github.com/grandyang/leetcode/issues/548) $|30.80%|Medium|

|547|[Friend Circles](https://github.com/grandyang/leetcode/issues/547)|49.00%|Medium|

|546|[Remove Boxes](https://github.com/grandyang/leetcode/issues/546)|29.60%|Hard|

|545|[Boundary of Binary Tree](https://github.com/grandyang/leetcode/issues/545) $|29.10%|Medium|

|544|[Output Contest Matches](https://github.com/grandyang/leetcode/issues/544) $|73.20%|Medium|

|543|[Diameter of Binary Tree](https://github.com/grandyang/leetcode/issues/543)|42.70%|Easy|

|542|[01 Matrix](https://github.com/grandyang/leetcode/issues/542)|32.50%|Medium|

|541|[Reverse String II](https://github.com/grandyang/leetcode/issues/541)|44.40%|Easy|

|540|[Single Element in a Sorted Array](https://github.com/grandyang/leetcode/issues/540)|55.90%|Medium|

|539|[Minimum Time Difference](https://github.com/grandyang/leetcode/issues/539)|44.70%|Medium|

|538|[Convert BST to Greater Tree](https://github.com/grandyang/leetcode/issues/538)|52.70%|Medium|

|537|[Complex Number Multiplication](https://github.com/grandyang/leetcode/issues/537)|65.90%|Medium|

|536|[Construct Binary Tree from String](https://github.com/grandyang/leetcode/issues/536) $|36.30%|Medium|

|535|[Encode and Decode TinyURL](https://github.com/grandyang/leetcode/issues/535)|76.10%|Medium|

|534|Game Play Analysis III|67.10%|Medium|

|533|[Lonely Pixel II](https://github.com/grandyang/leetcode/issues/533) $|38.90%|Medium|

|532|[K-diff Pairs in an Array](https://github.com/grandyang/leetcode/issues/532)|27.20%|Easy|

|531|[Lonely Pixel I](https://github.com/grandyang/leetcode/issues/531) $|50.20%|Medium|

|530|[Minimum Absolute Difference in BST](https://github.com/grandyang/leetcode/issues/530)|48.00%|Easy|

|529|[Minesweeper](https://github.com/grandyang/leetcode/issues/529)|52.00%|Medium|

|528|[Random Pick with Weight](https://github.com/grandyang/leetcode/issues/528)|41.80%|Medium|

|527|[Word Abbreviation](https://github.com/grandyang/leetcode/issues/527) $|33.90%|Hard|

|526|[Beautiful Arrangement](https://github.com/grandyang/leetcode/issues/526)|53.50%|Medium|

|525|[Contiguous Array](https://github.com/grandyang/leetcode/issues/525)|34.40%|Medium|

|524|[Longest Word in Dictionary through Deleting](https://github.com/grandyang/leetcode/issues/524)|40.20%|Medium|

|523|[Continuous Subarray Sum](https://github.com/grandyang/leetcode/issues/523)|21.30%|Medium|

|522|[Longest Uncommon Subsequence II](https://github.com/grandyang/leetcode/issues/522)|28.10%|Medium|

|521|[Longest Uncommon Subsequence I](https://github.com/grandyang/leetcode/issues/521)|50.70%|Easy|

|520|[Detect Capital](https://github.com/grandyang/leetcode/issues/520)|54.20%|Easy|

|519|[Random Flip Matrix](https://github.com/grandyang/leetcode/issues/519)|32.20%|Medium|

|518|[Coin Change 2](https://github.com/grandyang/leetcode/issues/518)|33.20%|Medium|

|517|[Super Washing Machines](https://github.com/grandyang/leetcode/issues/517)|34.60%|Hard|

|516|[Longest Palindromic Subsequence](https://github.com/grandyang/leetcode/issues/516)|42.00%|Medium|

|515|[Find Largest Value in Each Tree Row](https://github.com/grandyang/leetcode/issues/515)|52.70%|Medium|

|514|[Freedom Trail](https://github.com/grandyang/leetcode/issues/514)|27.20%|Hard|

|513|[Find Bottom Left Tree Value](https://github.com/grandyang/leetcode/issues/513)|55.60%|Medium|

|510|[Inorder Successor in BST II](https://github.com/grandyang/leetcode/issues/510) $|56.20%|Medium|

|509|[Fibonacci Number](https://github.com/grandyang/leetcode/issues/509)|66.40%|Easy|

|508|[Most Frequent Subtree Sum](https://github.com/grandyang/leetcode/issues/508)|52.00%|Medium|

|507|[Perfect Number](https://github.com/grandyang/leetcode/issues/507)|32.70%|Easy|

|506|[Relative Ranks](https://github.com/grandyang/leetcode/issues/506)|48.50%|Easy|

|505|[The Maze II](https://github.com/grandyang/leetcode/issues/505)|34.80%|Medium|

|504|[Base 7](https://github.com/grandyang/leetcode/issues/504)|46.40%|Easy|

|503|[Next Greater Element II](https://github.com/grandyang/leetcode/issues/503)|46.20%|Medium|

|502|[IPO](https://github.com/grandyang/leetcode/issues/502)|32.40%|Hard|

|501|[Find Mode in Binary Search Tree](https://github.com/grandyang/leetcode/issues/501)|39.40%|Easy|

|500|[Keyboard Row](https://github.com/grandyang/leetcode/issues/500)|60.20%|Easy|

|499|[The Maze III](https://github.com/grandyang/leetcode/issues/499)|32.00%|Hard|

|498|[Diagonal Traverse](https://github.com/grandyang/leetcode/issues/498)|46.20%|Medium|

|497|[Random Point in Non-overlapping Rectangles](https://github.com/grandyang/leetcode/issues/497)|33.20%|Medium|

|496|[Next Greater Element I](https://github.com/grandyang/leetcode/issues/496)|58.80%|Easy|

|495|[Teemo Attacking](https://github.com/grandyang/leetcode/issues/495)|51.90%|Medium|

|494|[Target Sum](https://github.com/grandyang/leetcode/issues/494)|44.40%|Medium|

|493|[Reverse Pairs](https://github.com/grandyang/leetcode/issues/493)|17.10%|Hard|

|492|[Construct the Rectangle](https://github.com/grandyang/leetcode/issues/492)|49.70%|Easy|

|491|[Increasing Subsequences](https://github.com/grandyang/leetcode/issues/491)|39.30%|Medium|

|490|[The Maze](https://github.com/grandyang/leetcode/issues/490)|42.80%|Medium|

|489|[Robot Room Cleaner](https://github.com/grandyang/leetcode/issues/489)|57.10%|Hard|

|488|[Zuma Game](https://github.com/grandyang/leetcode/issues/488)|38.00%|Hard|

|487|[Max Consecutive Ones II](https://github.com/grandyang/leetcode/issues/487) $|42.70%|Medium|

|486|[Predict the Winner](https://github.com/grandyang/leetcode/issues/486)|43.60%|Medium|

|485|[Max Consecutive Ones](https://github.com/grandyang/leetcode/issues/485)|55.30%|Easy|

|484|[Find Permutation](https://github.com/grandyang/leetcode/issues/484) $|50.50%|Medium|

|483|[Smallest Good Base](https://github.com/grandyang/leetcode/issues/483)|30.60%|Hard|

|482|[License Key Formatting](https://github.com/grandyang/leetcode/issues/482)|41.20%|Medium|

|481|[Magical String](https://github.com/grandyang/leetcode/issues/481)|46.20%|Medium|

|480|[Sliding Window Median](https://github.com/grandyang/leetcode/issues/480)|31.00%|Hard|

|479|[Largest Palindrome Product](https://github.com/grandyang/leetcode/issues/479)|23.90%|Easy|

|478|[Generate Random Point in a Circle](https://github.com/grandyang/leetcode/issues/478)|33.80%|Medium|

|477|[Total Hamming Distance](https://github.com/grandyang/leetcode/issues/477)|44.10%|Medium|

|476|[Number Complement](https://github.com/grandyang/leetcode/issues/476)|61.20%|Easy|

|475|[Heaters](https://github.com/grandyang/leetcode/issues/475)|30.20%|Easy|

|474|[Ones and Zeroes](https://github.com/grandyang/leetcode/issues/474)|34.90%|Medium|

|473|[Matchsticks to Square](https://github.com/grandyang/leetcode/issues/473)|31.80%|Medium|

|472|[Concatenated Words](https://github.com/grandyang/leetcode/issues/472)|29.20%|Hard|

|471|[Encode String with Shortest Length](https://github.com/grandyang/leetcode/issues/471) $|43.50%|Hard|

|470|[Implement Rand10() Using Rand7()](https://github.com/grandyang/leetcode/issues/470)|43.00%|Medium|

|469|[Convex Polygon](https://github.com/grandyang/leetcode/issues/469) $|27.20%|Medium|

|468|[Validate IP Address](https://github.com/grandyang/leetcode/issues/468)|22.10%|Medium|

|467|[Unique Substrings in Wraparound String](https://github.com/grandyang/leetcode/issues/467)|29.90%|Medium|

|466|[Count The Repetitions](https://github.com/grandyang/leetcode/issues/466)|24.20%|Hard|

|465|[Optimal Account Balancing](https://github.com/grandyang/leetcode/issues/465) $|29.20%|Hard|

|464|[Can I Win](https://github.com/grandyang/leetcode/issues/464)|22.20%|Medium|

|463|[Island Perimeter](https://github.com/grandyang/leetcode/issues/463)|56.70%|Easy|

|462|[Minimum Moves to Equal Array Elements II](https://github.com/grandyang/leetcode/issues/462)|50.90%|Medium|

|461|[Hamming Distance](https://github.com/grandyang/leetcode/issues/461)|73.20%|Easy|

|460|[LFU Cache](https://github.com/grandyang/leetcode/issues/460)|18.30%|Hard|

|459|[Repeated Substring Pattern](https://github.com/grandyang/leetcode/issues/459)|39.70%|Easy|

|458|[Poor Pigs](https://github.com/grandyang/leetcode/issues/458)|40.70%|Easy|

|457|[Circular Array Loop](https://github.com/grandyang/leetcode/issues/457)|20.60%|Medium|

|456|[132 Pattern](https://github.com/grandyang/leetcode/issues/456)|28.00%|Medium|

|455|[Assign Cookies](https://github.com/grandyang/leetcode/issues/455)|48.10%|Easy|

|454|[4Sum II](https://github.com/grandyang/leetcode/issues/454)|42.80%|Medium|

|453|[Minimum Moves to Equal Array Elements](https://github.com/grandyang/leetcode/issues/453)|46.30%|Easy|

|452|[Minimum Number of Arrows to Burst Balloons](https://github.com/grandyang/leetcode/issues/452)|42.10%|Medium|

|451|[Sort Characters By Frequency](https://github.com/grandyang/leetcode/issues/451)|50.90%|Medium|

|450|[Delete Node in a BST](https://github.com/grandyang/leetcode/issues/450)|34.50%|Medium|

|449|[Serialize and Deserialize BST](https://github.com/grandyang/leetcode/issues/449)|41.20%|Medium|

|448|[Find All Numbers Disappeared in an Array](https://github.com/grandyang/leetcode/issues/448)|58.30%|Easy|

|447|[Number of Boomerangs](https://github.com/grandyang/leetcode/issues/447)|42.20%|Easy|

|446|[Arithmetic Slices II - Subsequence](https://github.com/grandyang/leetcode/issues/446)|22.30%|Hard|

|445|[Add Two Numbers II](https://github.com/grandyang/leetcode/issues/445)|45.40%|Medium|

|444|[Sequence Reconstruction](https://github.com/grandyang/leetcode/issues/444) $|20.50%|Medium|

|443|[String Compression](https://github.com/grandyang/leetcode/issues/443)|35.80%|Easy|

|442|[Find All Duplicates in an Array](https://github.com/grandyang/leetcode/issues/442)|46.40%|Medium|

|441|[Arranging Coins](https://github.com/grandyang/leetcode/issues/441)|36.20%|Easy|

|440|[K-th Smallest in Lexicographical Order](https://github.com/grandyang/leetcode/issues/440)|21.50%|Hard|

|439|[Ternary Expression Parser](https://github.com/grandyang/leetcode/issues/439) $|49.40%|Medium|

|438|[Find All Anagrams in a String](https://github.com/grandyang/leetcode/issues/438)|33.50%|Easy|

|437|[Path Sum III](https://github.com/grandyang/leetcode/issues/437)|38.60%|Easy|

|436|[Find Right Interval](https://github.com/grandyang/leetcode/issues/436)|42.30%|Medium|

|435|[Non-overlapping Intervals](https://github.com/grandyang/leetcode/issues/435)|39.80%|Medium|

|434|[Number of Segments in a String](https://github.com/grandyang/leetcode/issues/434)|38.40%|Easy|

|433|[Minimum Genetic Mutation](https://github.com/grandyang/leetcode/issues/433)|33.50%|Medium|

|432|[All O`one Data Structure](https://github.com/grandyang/leetcode/issues/432)|28.30%|Hard|

|431|[Encode N-ary Tree to Binary Tree](https://github.com/grandyang/leetcode/issues/431) $|53.70%|Hard|

|430|[Flatten a Multilevel Doubly Linked List](https://github.com/grandyang/leetcode/issues/430)|36.20%|Medium|

|429|[N-ary Tree Level Order Traversal](https://github.com/grandyang/leetcode/issues/429)|55.80%|Easy|

|428|[Serialize and Deserialize N-ary Tree](https://github.com/grandyang/leetcode/issues/428) $|48.10%|Hard|

|427|[Construct Quad Tree](https://github.com/grandyang/leetcode/issues/427)|49.20%|Easy|

|426|[Convert Binary Search Tree to Sorted Doubly Linked List](https://github.com/grandyang/leetcode/issues/426)|43.30%|Medium|

|425|[Word Squares](https://github.com/grandyang/leetcode/issues/425) $|40.10%|Hard|

|424|[Longest Repeating Character Replacement](https://github.com/grandyang/leetcode/issues/424)|38.10%|Medium|

|423|[Reconstruct Original Digits from English](https://github.com/grandyang/leetcode/issues/423)|40.80%|Medium|

|422|[Valid Word Square](https://github.com/grandyang/leetcode/issues/422) $|36.40%|Easy|

|421|[Maximum XOR of Two Numbers in an Array](https://github.com/grandyang/leetcode/issues/421)|36.40%|Medium|

|420|[Strong Password Checker](https://github.com/grandyang/leetcode/issues/420)|22.10%|Hard|

|419|[Battleships in a Board](https://github.com/grandyang/leetcode/issues/419)|59.30%|Medium|

|418|[Sentence Screen Fitting](https://github.com/grandyang/leetcode/issues/418) $|25.10%|Medium|

|417|[Pacific Atlantic Water Flow](https://github.com/grandyang/leetcode/issues/417)|31.10%|Medium|

|416|[Partition Equal Subset Sum](https://github.com/grandyang/leetcode/issues/416)|36.80%|Medium|

|415|[Add Strings](https://github.com/grandyang/leetcode/issues/415)|41.50%|Easy|

|414|[Third Maximum Number](https://github.com/grandyang/leetcode/issues/414)|26.50%|Easy|

|413|[Arithmetic Slices](https://github.com/grandyang/leetcode/issues/413)|53.50%|Medium|

|412|[Fizz Buzz](https://github.com/grandyang/leetcode/issues/412)|57.50%|Easy|

|411|[Minimum Unique Word Abbreviation](https://github.com/grandyang/leetcode/issues/411) $|25.60%|Hard|

|410|[Split Array Largest Sum](https://github.com/grandyang/leetcode/issues/410)|25.00%|Hard|

|409|[Longest Palindrome](https://github.com/grandyang/leetcode/issues/409)|44.90%|Easy|

|408|[Valid Word Abbreviation](https://github.com/grandyang/leetcode/issues/408) $|26.20%|Easy|

|407|[Trapping Rain Water II](https://github.com/grandyang/leetcode/issues/407)|33.10%|Hard|

|406|[Queue Reconstruction by Height](https://github.com/grandyang/leetcode/issues/406)|54.10%|Medium|

|405|[Convert a Number to Hexadecimal](https://github.com/grandyang/leetcode/issues/405)|41.80%|Easy|

|404|[Sum of Left Leaves](https://github.com/grandyang/leetcode/issues/404)|46.20%|Easy|

|403|[Frog Jump](https://github.com/grandyang/leetcode/issues/403)|31.70%|Hard|

|402|[Remove K Digits](https://github.com/grandyang/leetcode/issues/402)|25.90%|Medium|

|401|[Binary Watch](https://github.com/grandyang/leetcode/issues/401)|43.00%|Easy|

|400|[Nth Digit](https://github.com/grandyang/leetcode/issues/400)|30.70%|Easy|

|399|[Evaluate Division](https://github.com/grandyang/leetcode/issues/399)|34.60%|Medium|

|398|[Random Pick Index](https://github.com/grandyang/leetcode/issues/398)|30.40%|Medium|

|397|[Integer Replacement](https://github.com/grandyang/leetcode/issues/397)|25.90%|Easy|

|396|[Rotate Function](https://github.com/grandyang/leetcode/issues/396)|28.40%|Easy|

|395|[Longest Substring with At Least K Repeating Characters](https://github.com/grandyang/leetcode/issues/395)|32.50%|Medium|

|394|[Decode String](https://github.com/grandyang/leetcode/issues/394)|38.60%|Medium|

|393|[UTF-8 Validation](https://github.com/grandyang/leetcode/issues/393)|33.00%|Medium|

|392|[Is Subsequence](https://github.com/grandyang/leetcode/issues/392)|44.10%|Medium|

|391|[Perfect Rectangle](https://github.com/grandyang/leetcode/issues/391)|13.30%|Hard|

|390|[Elimination Game](https://github.com/grandyang/leetcode/issues/390)|12.50%|Medium|

|389|[Find the Difference](https://github.com/grandyang/leetcode/issues/389)|49.90%|Easy|

|388|[Longest Absolute File Path](https://github.com/grandyang/leetcode/issues/388)|28.30%|Medium|

|387|[First Unique Character in a String](https://github.com/grandyang/leetcode/issues/387)|43.10%|Easy|

|386|[Lexicographical Numbers](https://github.com/grandyang/leetcode/issues/386)|31.00%|Medium|

|385|[Mini Parser](https://github.com/grandyang/leetcode/issues/385)|26.90%|Medium|

|384|[Shuffle an Array](https://github.com/grandyang/leetcode/issues/384)|45.50%|Medium|

|383|[Ransom Note](https://github.com/grandyang/leetcode/issues/383)|44.60%|Easy|

|382|[Linked List Random Node](https://github.com/grandyang/leetcode/issues/382)|48.60%|Medium|

|381|[Insert Delete GetRandom O(1) - Duplicates allowed](https://github.com/grandyang/leetcode/issues/381)|30.90%|Hard|

|380|[Insert Delete GetRandom O(1)](https://github.com/grandyang/leetcode/issues/380)|33.80%|Medium|

|379|[Design Phone Directory](https://github.com/grandyang/leetcode/issues/379) $|25.80%|Medium|

|378|[Kth Smallest Element in a Sorted Matrix](https://github.com/grandyang/leetcode/issues/378)|40.20%|Medium|

|377|[Combination Sum IV](https://github.com/grandyang/leetcode/issues/377)|37.50%|Medium|

|376|[Wiggle Subsequence](https://github.com/grandyang/leetcode/issues/376)|35.80%|Medium|

|375|[Guess Number Higher or Lower II](https://github.com/grandyang/leetcode/issues/375)|28.30%|Medium|

|374|[Guess Number Higher or Lower](https://github.com/grandyang/leetcode/issues/374)|31.70%|Easy|

|373|[Find K Pairs with Smallest Sums](https://github.com/grandyang/leetcode/issues/373)|25.50%|Medium|

|372|[Super Pow](https://github.com/grandyang/leetcode/issues/372)|30.10%|Medium|

|371|[Sum of Two Integers](https://github.com/grandyang/leetcode/issues/371)|54.00%|Easy|

|370|[Range Addition](https://github.com/grandyang/leetcode/issues/370) $|49.90%|Medium|

|369|[Plus One Linked List](https://github.com/grandyang/leetcode/issues/369) $|50.10%|Medium|

|368|[Largest Divisible Subset](https://github.com/grandyang/leetcode/issues/368)|32.00%|Medium|

|367|[Valid Perfect Square](https://github.com/grandyang/leetcode/issues/367)|36.60%|Medium|

|366|[Find Leaves of Binary Tree](https://github.com/grandyang/leetcode/issues/366) $|53.60%|Medium|

|365|[Water and Jug Problem](https://github.com/grandyang/leetcode/issues/365)|20.10%|Medium|

|364|[Nested List Weight Sum II](https://github.com/grandyang/leetcode/issues/364) $|47.20%|Medium|

|363|[Max Sum of Rectangle No Larger Than K](https://github.com/grandyang/leetcode/issues/363)|27.00%|Hard|

|362|[Design Hit Counter](https://github.com/grandyang/leetcode/issues/362) $|48.30%|Medium|

|361|[Bomb Enemy](https://github.com/grandyang/leetcode/issues/361) $|32.60%|Medium|

|360|[Sort Transformed Array](https://github.com/grandyang/leetcode/issues/360) $|40.80%|Medium|

|359|[Logger Rate Limiter](https://github.com/grandyang/leetcode/issues/359) $|56.00%|Easy|

|358|[Rearrange String k Distance Apart](https://github.com/grandyang/leetcode/issues/358) $|26.90%|Hard|

|357|[Count Numbers with Unique Digits](https://github.com/grandyang/leetcode/issues/357)|42.50%|Medium|

|356|[Line Reflection](https://github.com/grandyang/leetcode/issues/356) $|28.70%|Medium|

|355|[Design Twitter](https://github.com/grandyang/leetcode/issues/355)|22.20%|Medium|

|354|[Russian Doll Envelopes](https://github.com/grandyang/leetcode/issues/354)|27.10%|Hard|

|353|[Design Snake Game](https://github.com/grandyang/leetcode/issues/353) $|19.80%|Medium|

|352|[Data Stream as Disjoint Intervals](https://github.com/grandyang/leetcode/issues/352)|34.40%|Hard|

|351|[Android Unlock Patterns](https://github.com/grandyang/leetcode/issues/351) $|32.00%|Medium|

|350|[Intersection of Two Arrays II](https://github.com/grandyang/leetcode/issues/350)|41.50%|Easy|

|349|[Intersection of Two Arrays](https://github.com/grandyang/leetcode/issues/349)|47.80%|Easy|

|348|[Design Tic-Tac-Toe ](https://github.com/grandyang/leetcode/issues/348) $|45.60%|Medium|

|347|[Top K Frequent Elements](https://github.com/grandyang/leetcode/issues/347)|44.50%|Medium|

|346|[Moving Average from Data Stream ](https://github.com/grandyang/leetcode/issues/346) $|69.20%|Easy|

|345|[Reverse Vowels of a String](https://github.com/grandyang/leetcode/issues/345)|35.30%|Easy|

|344|[Reverse String](https://github.com/grandyang/leetcode/issues/344)|58.90%|Easy|

|343|[Integer Break](https://github.com/grandyang/leetcode/issues/343)|43.60%|Medium|

|342|[Power of Four](https://github.com/grandyang/leetcode/issues/342)|34.10%|Easy|

|341|[Flatten Nested List Iterator](https://github.com/grandyang/leetcode/issues/341) $|18.70%|Medium|

|340|[Longest Substring with At Most K Distinct Characters](https://github.com/grandyang/leetcode/issues/340) $|36.30%|Hard|

|339|[Nested List Weight Sum](https://github.com/grandyang/leetcode/issues/339) $|54.60%|Easy|

|338|[Counting Bits](https://github.com/grandyang/leetcode/issues/338)|55.40%|Medium|

|337|[House Robber III](https://github.com/grandyang/leetcode/issues/337)|37.00%|Medium|

|336|[Palindrome Pairs](https://github.com/grandyang/leetcode/issues/336)|18.70%|Hard|

|335|[Self Crossing](https://github.com/grandyang/leetcode/issues/335)|18.00%|Medium|

|334|[Increasing Triplet Subsequence](https://github.com/grandyang/leetcode/issues/334)|33.20%|Medium|

|333|[Largest BST Subtree](https://github.com/grandyang/leetcode/issues/333) $|26.50%|Medium|

|332|[Reconstruct Itinerary](https://github.com/grandyang/leetcode/issues/332)|23.40%|Medium|

|331|[Verify Preorder Serialization of a Binary Tree](https://github.com/grandyang/leetcode/issues/331)|31.50%|Medium|

|330|[Patching Array](https://github.com/grandyang/leetcode/issues/330)|28.80%|Medium|

|329|[Longest Increasing Path in a Matrix](https://github.com/grandyang/leetcode/issues/329)|29.50%|Medium|

|328|[Odd Even Linked List](https://github.com/grandyang/leetcode/issues/328)|37.80%|Easy|

|327|[Count of Range Sum](https://github.com/grandyang/leetcode/issues/327)|24.30%|Hard|

|326|[Power of Three](https://github.com/grandyang/leetcode/issues/326)|35.30%|Easy|

|325|[Maximum Size Subarray Sum Equals k](https://github.com/grandyang/leetcode/issues/325) $|39.60%|Easy|

|324|[Wiggle Sort II](https://github.com/grandyang/leetcode/issues/324)|20.10%|Medium|

|323|[Number of Connected Components in an Undirected Graph](https://github.com/grandyang/leetcode/issues/323) $|43.30%|Medium|

|322|[Coin Change](https://github.com/grandyang/leetcode/issues/322)|24.90%|Medium|

|321|[Create Maximum Number](https://github.com/grandyang/leetcode/issues/321)|19.10%|Hard|

|320|[Generalized Abbreviation](https://github.com/grandyang/leetcode/issues/320) $|40.40%|Medium|

|319|[Bulb Switcher](https://github.com/grandyang/leetcode/issues/319)|39.20%|Medium|

|318|[Maximum Product of Word Lengths](https://github.com/grandyang/leetcode/issues/318)|38.70%|Medium|

|317|[Shortest Distance from All Buildings](https://github.com/grandyang/leetcode/issues/317) $|29.10%|Hard|

|316|[Remove Duplicate Letters](https://github.com/grandyang/leetcode/issues/316)|23.00%|Medium|

|315|[Count of Smaller Numbers After Self](https://github.com/grandyang/leetcode/issues/315)|28.20%|Hard|

|314|[Binary Tree Vertical Order Traversal](https://github.com/grandyang/leetcode/issues/314) $|30.10%|Medium|

|313|[Super Ugly Number](https://github.com/grandyang/leetcode/issues/313)|31.20%|Medium|

|312|[Burst Balloons](https://github.com/grandyang/leetcode/issues/312)|24.50%|Medium|

|311|[Sparse Matrix Multiplication](https://github.com/grandyang/leetcode/issues/311) $|40.00%|Medium|

|310|[Minimum Height Trees](https://github.com/grandyang/leetcode/issues/310)|20.20%|Medium|

|309|[Best Time to Buy and Sell Stock with Cooldown](https://github.com/grandyang/leetcode/issues/309)|32.60%|Medium|

|308|[Range Sum Query 2D - Mutable](https://github.com/grandyang/leetcode/issues/308) $|20.30%|Hard|

|307|[Range Sum Query - Mutable](https://github.com/grandyang/leetcode/issues/307)|14.50%|Medium|

|306|[Additive Number](https://github.com/grandyang/leetcode/issues/306)|23.30%|Medium|

|305|[Number of Islands II](https://github.com/grandyang/leetcode/issues/305) $|26.70%|Hard|

|304|[Range Sum Query 2D - Immutable](https://github.com/grandyang/leetcode/issues/304)|21.50%|Medium|

|303|[Range Sum Query - Immutable](https://github.com/grandyang/leetcode/issues/303)|25.70%|Easy|

|302|[Smallest Rectangle Enclosing Black Pixels](https://github.com/grandyang/leetcode/issues/302) $|36.70%|Hard|

|301|[Remove Invalid Parentheses](https://github.com/grandyang/leetcode/issues/301)|27.00%|Hard|

|300|[Longest Increasing Subsequence](https://github.com/grandyang/leetcode/issues/300)|31.50%|Medium|

|299|[Bulls and Cows](https://github.com/grandyang/leetcode/issues/299)|23.80%|Easy|

|298|[Binary Tree Longest Consecutive Sequence](https://github.com/grandyang/leetcode/issues/298) $|32.20%|Medium|

|297|[Serialize and Deserialize Binary Tree](https://github.com/grandyang/leetcode/issues/297)|23.80%|Medium|

|296|[Best Meeting Point](https://github.com/grandyang/leetcode/issues/296) $|41.40%|Hard|

|295|[Find Median from Data Stream](https://github.com/grandyang/leetcode/issues/295)|18.60%|Hard|

|294|[Flip Game II](https://github.com/grandyang/leetcode/issues/294) $|38.10%|Medium|

|293|[Flip Game](https://github.com/grandyang/leetcode/issues/293) $|47.60%|Easy|

|292|[Nim Game](https://github.com/grandyang/leetcode/issues/292)|49.50%|Easy|

|291|[Word Pattern II](https://github.com/grandyang/leetcode/issues/291) $|31.50%|Hard|

|290|[Word Pattern](https://github.com/grandyang/leetcode/issues/290)|26.50%|Easy|

|289|[Game of Life](https://github.com/grandyang/leetcode/issues/289)|32.60%|Medium|

|288|[Unique Word Abbreviation](https://github.com/grandyang/leetcode/issues/288) $|16.80%|Easy|

|287|[Find the Duplicate Number](https://github.com/grandyang/leetcode/issues/287)|32.80%|Hard|

|286|[Walls and Gates](https://github.com/grandyang/leetcode/issues/286) $|29.90%|Medium|

|285|[Inorder Successor in BST](https://github.com/grandyang/leetcode/issues/285) $|32.50%|Medium|

|284|[Peeking Iterator](https://github.com/grandyang/leetcode/issues/284)|31.00%|Medium|

|283|[Move Zeroes](https://github.com/grandyang/leetcode/issues/283)|41.40%|Easy|

|282|[Expression Add Operators](https://github.com/grandyang/leetcode/issues/282)|18.90%|Hard|

|281|[Zigzag Iterator](https://github.com/grandyang/leetcode/issues/281) $|37.20%|Medium|

|280|[Wiggle Sort](https://github.com/grandyang/leetcode/issues/280) $|43.30%|Medium|

|279|[Perfect Squares](https://github.com/grandyang/leetcode/issues/279)|28.80%|Medium|

|278|[First Bad Version](https://github.com/grandyang/leetcode/issues/278)|19.80%|Easy|

|277|[Find the Celebrity](https://github.com/grandyang/leetcode/issues/277) $|31.70%|Medium|

|276|[Paint Fence](https://github.com/grandyang/leetcode/issues/276) $|25.00%|Easy|

|275|[H-Index II](https://github.com/grandyang/leetcode/issues/275)|31.40%|Medium|

|274|[H-Index](https://github.com/grandyang/leetcode/issues/274)|25.30%|Medium|

|273|[Integer to English Words](https://github.com/grandyang/leetcode/issues/273)|15.50%|Medium|

|272|[Closest Binary Search Tree Value II](https://github.com/grandyang/leetcode/issues/272) $|26.90%|Hard|

|271|[Encode and Decode Strings](https://github.com/grandyang/leetcode/issues/271) $|25.40%|Medium|

|270|[Closest Binary Search Tree Value](https://github.com/grandyang/leetcode/issues/270) $|29.40%|Easy|

|269|[Alien Dictionary](https://github.com/grandyang/leetcode/issues/269) $|16.50%|Hard|

|268|[Missing Number](https://github.com/grandyang/leetcode/issues/268)|34.70%|Medium|

|267|[Palindrome Permutation II](https://github.com/grandyang/leetcode/issues/267) $|22.50%|Medium|

|266|[Palindrome Permutation](https://github.com/grandyang/leetcode/issues/266) $|45.80%|Easy|

|265|[Paint House II](https://github.com/grandyang/leetcode/issues/265) $|30.00%|Hard|

|264|[Ugly Number II](https://github.com/grandyang/leetcode/issues/264)|21.60%|Medium|

|263|[Ugly Number](https://github.com/grandyang/leetcode/issues/263)|32.60%|Easy|

|262|[Trips and Users](https://github.com/grandyang/leetcode/issues/262) *|16.10%|Hard|

|261|[Graph Valid Tree](https://github.com/grandyang/leetcode/issues/261) $|25.40%|Medium|

|260|[Single Number III](https://github.com/grandyang/leetcode/issues/260)|37.60%|Medium|

|259|[3Sum Smaller](https://github.com/grandyang/leetcode/issues/259) $|34.20%|Medium|

|258|[Add Digits](https://github.com/grandyang/leetcode/issues/258)|46.50%|Easy|

|257|[Binary Tree Paths](https://github.com/grandyang/leetcode/issues/257)|21.90%|Easy|

|256|[Paint House](https://github.com/grandyang/leetcode/issues/256) $|38.40%|Medium|

|255|[Verify Preorder Sequence in Binary Search Tree](https://github.com/grandyang/leetcode/issues/255) $|32.30%|Medium|

|254|[Factor Combinations](https://github.com/grandyang/leetcode/issues/254) $|29.00%|Medium|

|253|[Meeting Rooms II](https://github.com/grandyang/leetcode/issues/253) $|28.80%|Medium|

|252|[Meeting Rooms](https://github.com/grandyang/leetcode/issues/252) $|35.40%|Easy|

|251|[Flatten 2D Vector](https://github.com/grandyang/leetcode/issues/251) $|28.30%|Medium|

|250|[Count Univalue Subtrees](https://github.com/grandyang/leetcode/issues/250) $|32.70%|Medium|

|249|[Group Shifted Strings](https://github.com/grandyang/leetcode/issues/249) $|25.20%|Easy|

|248|[Strobogrammatic Number III](https://github.com/grandyang/leetcode/issues/248) $|21.80%|Hard|

|247|[Strobogrammatic Number II](https://github.com/grandyang/leetcode/issues/247) $|26.70%|Medium|

|246|[Strobogrammatic Number](https://github.com/grandyang/leetcode/issues/246) $|31.60%|Easy|

|245|[Shortest Word Distance III](https://github.com/grandyang/leetcode/issues/245) $|43.20%|Medium|

|244|[Shortest Word Distance II](https://github.com/grandyang/leetcode/issues/244) $|33.70%|Medium|

|243|[Shortest Word Distance](https://github.com/grandyang/leetcode/issues/243) $|41.80%|Easy|

|242|[Valid Anagram](https://github.com/grandyang/leetcode/issues/242)|39.30%|Easy|

|241|[Different Ways to Add Parentheses](https://github.com/grandyang/leetcode/issues/241)|27.10%|Medium|

|240|[Search a 2D Matrix II](https://github.com/grandyang/leetcode/issues/240)|31.40%|Medium|

|239|[Sliding Window Maximum](https://github.com/grandyang/leetcode/issues/239)|24.30%|Hard|

|238|[Product of Array Except Self](https://github.com/grandyang/leetcode/issues/238)|42.40%|Medium|

|237|[Delete Node in a Linked List](https://github.com/grandyang/leetcode/issues/237)|50.90%|Easy|

|236|[Lowest Common Ancestor of a Binary Tree](https://github.com/grandyang/leetcode/issues/236)|28.30%|Medium|

|235|[Lowest Common Ancestor of a Binary Search Tree](https://github.com/grandyang/leetcode/issues/235)|38.90%|Medium|

|234|[Palindrome Linked List](https://github.com/grandyang/leetcode/issues/234)|23.80%|Easy|

|233|[Number of Digit One](https://github.com/grandyang/leetcode/issues/233)|16.10%|Medium|

|232|[Implement Queue using Stacks](https://github.com/grandyang/leetcode/issues/232)|37.40%|Easy|

|231|[Power of Two](https://github.com/grandyang/leetcode/issues/231)|31.30%|Easy|

|230|[Kth Smallest Element in a BST](https://github.com/grandyang/leetcode/issues/230)|30.50%|Medium|

|229|[Majority Element II](https://github.com/grandyang/leetcode/issues/229)|30.50%|Medium|

|228|[Summary Ranges](https://github.com/grandyang/leetcode/issues/228)|21.10%|Easy|

|227|[Basic Calculator II](https://github.com/grandyang/leetcode/issues/227)|18.00%|Medium|

|226|[Invert Binary Tree](https://github.com/grandyang/leetcode/issues/226)|35.40%|Easy|

|225|[Implement Stack using Queues](https://github.com/grandyang/leetcode/issues/225)|29.60%|Medium|

|224|[Basic Calculator](https://github.com/grandyang/leetcode/issues/224)|15.80%|Medium|

|223|[Rectangle Area](https://github.com/grandyang/leetcode/issues/223)|25.60%|Easy|

|222|[Count Complete Tree Nodes](https://github.com/grandyang/leetcode/issues/222)|19.40%|Medium|

|221|[Maximal Square](https://github.com/grandyang/leetcode/issues/221)|20.30%|Medium|

|220|[Contains Duplicate III](https://github.com/grandyang/leetcode/issues/220)|15.30%|Medium|

|219|[Contains Duplicate II](https://github.com/grandyang/leetcode/issues/219)|25.60%|Easy|

|218|[The Skyline Problem](https://github.com/grandyang/leetcode/issues/218)|16.20%|Hard|

|217|[Contains Duplicate](https://github.com/grandyang/leetcode/issues/217)|35.90%|Easy|

|216|[Combination Sum III](https://github.com/grandyang/leetcode/issues/216)|27.70%|Medium|

|215|[Kth Largest Element in an Array](https://github.com/grandyang/leetcode/issues/215)|27.30%|Medium|

|214|[Shortest Palindrome](https://github.com/grandyang/leetcode/issues/214)|16.80%|Hard|

|213|[House Robber II](https://github.com/grandyang/leetcode/issues/213)|26.30%|Medium|

|212|[Word Search II](https://github.com/grandyang/leetcode/issues/212)|15.00%|Hard|

|211|[Add and Search Word - Data structure design](https://github.com/grandyang/leetcode/issues/211)|20.70%|Medium|

|210|[Course Schedule II](https://github.com/grandyang/leetcode/issues/210)|19.30%|Medium|

|209|[Minimum Size Subarray Sum](https://github.com/grandyang/leetcode/issues/209)|22.90%|Medium|

|208|[Implement Trie (Prefix Tree)](https://github.com/grandyang/leetcode/issues/208)|24.80%|Medium|

|207|[Course Schedule](https://github.com/grandyang/leetcode/issues/207)|21.70%|Medium|

|206|[Reverse Linked List](https://github.com/grandyang/leetcode/issues/206)|31.50%|Easy|

|205|[Isomorphic Strings](https://github.com/grandyang/leetcode/issues/205)|24.20%|Easy|

|204|[Count Primes](https://github.com/grandyang/leetcode/issues/204)|19.00%|Easy|

|203|[Remove Linked List Elements](https://github.com/grandyang/leetcode/issues/203)|25.80%|Easy|

|202|[Happy Number](https://github.com/grandyang/leetcode/issues/202)|31.40%|Easy|

|201|[Bitwise AND of Numbers Range](https://github.com/grandyang/leetcode/issues/201)|23.30%|Medium|

|200|[Number of Islands](https://github.com/grandyang/leetcode/issues/200)|21.90%|Medium|

|199|[Binary Tree Right Side View](https://github.com/grandyang/leetcode/issues/199)|27.10%|Medium|

|198|[House Robber](https://github.com/grandyang/leetcode/issues/198)|28.80%|Easy|

|197|[Rising Temperature](https://github.com/grandyang/leetcode/issues/197) *|25.90%|Easy|

|196|[Delete Duplicate Emails](https://github.com/grandyang/leetcode/issues/196) *|19.00%|Easy|

|195|[Tenth Line](https://github.com/grandyang/leetcode/issues/195) #|32.20%|Easy|

|194|[Transpose File](https://github.com/grandyang/leetcode/issues/194) #|21.40%|Medium|

|193|[Valid Phone Numbers](https://github.com/grandyang/leetcode/issues/193) #|24.40%|Easy|

|192|[Word Frequency](https://github.com/grandyang/leetcode/issues/192) #|26.10%|Medium|

|191|[Number of 1 Bits](https://github.com/grandyang/leetcode/issues/191)|37.30%|Easy|

|190|[Reverse Bits](https://github.com/grandyang/leetcode/issues/190)|28.40%|Easy|

|189|[Rotate Array](https://github.com/grandyang/leetcode/issues/189)|17.80%|Easy|

|188|[Best Time to Buy and Sell Stock IV](https://github.com/grandyang/leetcode/issues/188)|17.30%|Hard|

|187|[Repeated DNA Sequences](https://github.com/grandyang/leetcode/issues/187)|19.50%|Medium|

|186|[Reverse Words in a String II](https://github.com/grandyang/leetcode/issues/186) $|31.10%|Medium|

|185|[Department Top Three Salaries](https://github.com/grandyang/leetcode/issues/185) *|15.20%|Hard|

|184|[Department Highest Salary](https://github.com/grandyang/leetcode/issues/184) *|19.00%|Medium|

|183|[Customers Who Never Order](https://github.com/grandyang/leetcode/issues/183) *|33.70%|Easy|

|182|[Duplicate Emails](https://github.com/grandyang/leetcode/issues/182) *|38.10%|Easy|

|181|[Employees Earning More Than Their Managers](https://github.com/grandyang/leetcode/issues/181) *|41.00%|Easy|

|180|[Consecutive Numbers](https://github.com/grandyang/leetcode/issues/180) *|26.60%|Medium|

|179|[Largest Number](https://github.com/grandyang/leetcode/issues/179)|15.70%|Medium|

|178|[Rank Scores](https://github.com/grandyang/leetcode/issues/178) *|24.60%|Medium|

|177|[Nth Highest Salary](https://github.com/grandyang/leetcode/issues/177) *|16.30%|Medium|

|176|[Second Highest Salary](https://github.com/grandyang/leetcode/issues/176) *|25.00%|Easy|

|175|[Combine Two Tables](https://github.com/grandyang/leetcode/issues/175) *|34.40%|Easy|

|174|[Dungeon Game](https://github.com/grandyang/leetcode/issues/174)|17.70%|Hard|

|173|[Binary Search Tree Iterator](https://github.com/grandyang/leetcode/issues/173)|29.30%|Medium|

|172|[Factorial Trailing Zeroes](https://github.com/grandyang/leetcode/issues/172)|28.40%|Easy|

|171|[Excel Sheet Column Number](https://github.com/grandyang/leetcode/issues/171)|36.50%|Easy|

|170|[Two Sum III - Data structure design](https://github.com/grandyang/leetcode/issues/170) $|24.70%|Easy|

|169|[Majority Element](https://github.com/grandyang/leetcode/issues/169)|35.00%|Easy|

|168|[Excel Sheet Column Title](https://github.com/grandyang/leetcode/issues/168)|18.10%|Easy|

|167|[Two Sum II - Input array is sorted](https://github.com/grandyang/leetcode/issues/167) $|43.30%|Medium|

|166|[Fraction to Recurring Decimal](https://github.com/grandyang/leetcode/issues/166)|12.70%|Medium|

|165|[Compare Version Numbers](https://github.com/grandyang/leetcode/issues/165)|15.20%|Easy|

|164|[Maximum Gap](https://github.com/grandyang/leetcode/issues/164)|24.40%|Hard|

|163|[Missing Ranges](https://github.com/grandyang/leetcode/issues/163) $|24.10%|Medium|

|162|[Find Peak Element](https://github.com/grandyang/leetcode/issues/162)|31.50%|Medium|

|161|[One Edit Distance](https://github.com/grandyang/leetcode/issues/161) $|24.00%|Medium|

|160|[Intersection of Two Linked Lists](https://github.com/grandyang/leetcode/issues/160)|28.70%|Easy|

|159|[Longest Substring with At Most Two Distinct Characters](https://github.com/grandyang/leetcode/issues/159) $|30.20%|Hard|

|158|[Read N Characters Given Read4 II - Call multiple times](https://github.com/grandyang/leetcode/issues/158) $|22.30%|Hard|

|157|[Read N Characters Given Read4](https://github.com/grandyang/leetcode/issues/157) $|29.80%|Easy|

|156|[Binary Tree Upside Down](https://github.com/grandyang/leetcode/issues/156) $|34.30%|Medium|

|155|[Min Stack](https://github.com/grandyang/leetcode/issues/155)|18.50%|Easy|

|154|[Find Minimum in Rotated Sorted Array II](https://github.com/grandyang/leetcode/issues/154)|31.90%|Hard|

|153|[Find Minimum in Rotated Sorted Array](https://github.com/grandyang/leetcode/issues/153)|33.30%|Medium|

|152|[Maximum Product Subarray](https://github.com/grandyang/leetcode/issues/152)|19.40%|Medium|

|151|[Reverse Words in a String](https://github.com/grandyang/leetcode/issues/151)|15.10%|Medium|

|150|[Evaluate Reverse Polish Notation](https://github.com/grandyang/leetcode/issues/150)|21.10%|Medium|

|149|[Max Points on a Line](https://github.com/grandyang/leetcode/issues/149)|12.60%|Hard|

|148|[Sort List](https://github.com/grandyang/leetcode/issues/148)|22.00%|Medium|

|147|[Insertion Sort List](https://github.com/grandyang/leetcode/issues/147)|26.40%|Medium|

|146|[LRU Cache](https://github.com/grandyang/leetcode/issues/146)|15.00%|Hard|

|145|[Binary Tree Postorder Traversal](https://github.com/grandyang/leetcode/issues/145)|32.40%|Hard|

|144|[Binary Tree Preorder Traversal](https://github.com/grandyang/leetcode/issues/144)|36.30%|Medium|

|143|[Reorder List](https://github.com/grandyang/leetcode/issues/143)|21.00%|Medium|

|142|[Linked List Cycle II](https://github.com/grandyang/leetcode/issues/142)|31.40%|Medium|

|141|[Linked List Cycle](https://github.com/grandyang/leetcode/issues/141)|36.30%|Medium|

|140|[Word Break II](https://github.com/grandyang/leetcode/issues/140)|17.70%|Hard|

|139|[Word Break](https://github.com/grandyang/leetcode/issues/139)|23.00%|Medium|

|138|[Copy List with Random Pointer](https://github.com/grandyang/leetcode/issues/138)|25.10%|Hard|

|137|[Single Number II](https://github.com/grandyang/leetcode/issues/137)|35.00%|Medium|

|136|[Single Number](https://github.com/grandyang/leetcode/issues/136)|45.10%|Medium|

|135|[Candy](https://github.com/grandyang/leetcode/issues/135)|20.50%|Hard|

|134|[Gas Station](https://github.com/grandyang/leetcode/issues/134)|25.70%|Medium|

|133|[Clone Graph](https://github.com/grandyang/leetcode/issues/133)|24.00%|Medium|

|132|[Palindrome Partitioning II](https://github.com/grandyang/leetcode/issues/132)|19.70%|Hard|

|131|[Palindrome Partitioning](https://github.com/grandyang/leetcode/issues/131)|26.70%|Medium|

|130|[Surrounded Regions](https://github.com/grandyang/leetcode/issues/130)|14.60%|Medium|

|129|[Sum Root to Leaf Numbers](https://github.com/grandyang/leetcode/issues/129)|30.30%|Medium|

|128|[Longest Consecutive Sequence](https://github.com/grandyang/leetcode/issues/128)|29.40%|Hard|

|127|[Word Ladder](https://github.com/grandyang/leetcode/issues/127)|19.30%|Medium|

|126|[Word Ladder II](https://github.com/grandyang/leetcode/issues/126)|12.90%|Hard|

|125|[Valid Palindrome](https://github.com/grandyang/leetcode/issues/125)|22.00%|Easy|

|124|[Binary Tree Maximum Path Sum](https://github.com/grandyang/leetcode/issues/124)|21.50%|Hard|

|123|[Best Time to Buy and Sell Stock III](https://github.com/grandyang/leetcode/issues/123)|23.90%|Hard|

|122|[Best Time to Buy and Sell Stock II](https://github.com/grandyang/leetcode/issues/122)|38.30%|Medium|

|121|[Best Time to Buy and Sell Stock](https://github.com/grandyang/leetcode/issues/121)|32.60%|Medium|

|120|[Triangle](https://github.com/grandyang/leetcode/issues/120)|27.40%|Medium|

|119|[Pascal's Triangle II](https://github.com/grandyang/leetcode/issues/119)|29.40%|Easy|

|118|[Pascal's Triangle](https://github.com/grandyang/leetcode/issues/118)|30.10%|Easy|

|117|[Populating Next Right Pointers in Each Node II](https://github.com/grandyang/leetcode/issues/117)|32.00%|Hard|

|116|[Populating Next Right Pointers in Each Node](https://github.com/grandyang/leetcode/issues/116)|36.20%|Medium|

|115|[Distinct Subsequences](https://github.com/grandyang/leetcode/issues/115)|26.30%|Hard|

|114|[Flatten Binary Tree to Linked List](https://github.com/grandyang/leetcode/issues/114)|28.80%|Medium|

|113|[Path Sum II](https://github.com/grandyang/leetcode/issues/113)|26.60%|Medium|

|112|[Path Sum](https://github.com/grandyang/leetcode/issues/112)|29.80%|Easy|

|111|[Minimum Depth of Binary Tree](https://github.com/grandyang/leetcode/issues/111)|29.10%|Easy|

|110|[Balanced Binary Tree](https://github.com/grandyang/leetcode/issues/110)|32.00%|Easy|

|109|[Convert Sorted List to Binary Search Tree](https://github.com/grandyang/leetcode/issues/109)|27.90%|Medium|

|108|[Convert Sorted Array to Binary Search Tree](https://github.com/grandyang/leetcode/issues/108)|34.00%|Medium|

|107|[Binary Tree Level Order Traversal II](https://github.com/grandyang/leetcode/issues/107)|31.10%|Easy|

|106|[Construct Binary Tree from Inorder and Postorder Traversal](https://github.com/grandyang/leetcode/issues/106)|26.80%|Medium|

|105|[Construct Binary Tree from Preorder and Inorder Traversal](https://github.com/grandyang/leetcode/issues/105)|26.40%|Medium|

|104|[Maximum Depth of Binary Tree](https://github.com/grandyang/leetcode/issues/104)|45.10%|Easy|

|103|[Binary Tree Zigzag Level Order Traversal](https://github.com/grandyang/leetcode/issues/103)|26.40%|Medium|

|102|[Binary Tree Level Order Traversal](https://github.com/grandyang/leetcode/issues/102)|29.30%|Easy|

|101|[Symmetric Tree](https://github.com/grandyang/leetcode/issues/101)|31.60%|Easy|

|100|[Same Tree](https://github.com/grandyang/leetcode/issues/100)|41.80%|Easy|

|99|[Recover Binary Search Tree](https://github.com/grandyang/leetcode/issues/99)|24.30%|Hard|

|98|[Validate Binary Search Tree](https://github.com/grandyang/leetcode/issues/98)|20.60%|Medium|

|97|[Interleaving String](https://github.com/grandyang/leetcode/issues/97)|20.80%|Hard|

|96|[Unique Binary Search Trees](https://github.com/grandyang/leetcode/issues/96)|36.00%|Medium|

|95|[Unique Binary Search Trees II](https://github.com/grandyang/leetcode/issues/95)|28.00%|Medium|

|94|[Binary Tree Inorder Traversal](https://github.com/grandyang/leetcode/issues/94)|36.20%|Medium|

|93|[Restore IP Addresses](https://github.com/grandyang/leetcode/issues/93)|21.00%|Medium|

|92|[Reverse Linked List II](https://github.com/grandyang/leetcode/issues/92)|26.10%|Medium|

|91|[Decode Ways](https://github.com/grandyang/leetcode/issues/91)|16.40%|Medium|

|90|[Subsets II](https://github.com/grandyang/leetcode/issues/90)|27.70%|Medium|

|89|[Gray Code](https://github.com/grandyang/leetcode/issues/89)|32.80%|Medium|

|88|[Merge Sorted Array](https://github.com/grandyang/leetcode/issues/88)|29.70%|Easy|

|87|[Scramble String](https://github.com/grandyang/leetcode/issues/87)|24.20%|Hard|

|86|[Partition List](https://github.com/grandyang/leetcode/issues/86)|27.50%|Medium|

|85|[Maximal Rectangle](https://github.com/grandyang/leetcode/issues/85)|22.00%|Hard|

|84|[Largest Rectangle in Histogram](https://github.com/grandyang/leetcode/issues/84)|22.60%|Hard|

|83|[Remove Duplicates from Sorted List](https://github.com/grandyang/leetcode/issues/83)|34.50%|Easy|

|82|[Remove Duplicates from Sorted List II](https://github.com/grandyang/leetcode/issues/82)|25.00%|Medium|

|81|[Search in Rotated Sorted Array II](https://github.com/grandyang/leetcode/issues/81)|31.40%|Medium|

|80|[Remove Duplicates from Sorted Array II](https://github.com/grandyang/leetcode/issues/80)|30.50%|Medium|

|79|[Word Search](https://github.com/grandyang/leetcode/issues/79)|20.30%|Medium|

|78|[Subsets](https://github.com/grandyang/leetcode/issues/78)|28.20%|Medium|

|77|[Combinations](https://github.com/grandyang/leetcode/issues/77)|30.90%|Medium|

|76|[Minimum Window Substring](https://github.com/grandyang/leetcode/issues/76)|18.90%|Hard|

|75|[Sort Colors](https://github.com/grandyang/leetcode/issues/75)|32.60%|Medium|

|74|[Search a 2D Matrix](https://github.com/grandyang/leetcode/issues/74)|31.60%|Medium|

|73|[Set Matrix Zeroes](https://github.com/grandyang/leetcode/issues/73)|31.40%|Medium|

|72|[Edit Distance](https://github.com/grandyang/leetcode/issues/72)|26.20%|Hard|

|71|[Simplify Path](https://github.com/grandyang/leetcode/issues/71)|20.00%|Medium|

|70|[Climbing Stairs](https://github.com/grandyang/leetcode/issues/70)|34.40%|Easy|

|69|[Sqrt(x)](https://github.com/grandyang/leetcode/issues/69)|23.10%|Medium|

|68|[Text Justification](https://github.com/grandyang/leetcode/issues/68)|14.60%|Hard|

|67|[Add Binary](https://github.com/grandyang/leetcode/issues/67)|24.70%|Easy|

|66|[Plus One](https://github.com/grandyang/leetcode/issues/66)|30.40%|Easy|

|65|[Valid Number](https://github.com/grandyang/leetcode/issues/65)|11.40%|Hard|

|64|[Minimum Path Sum](https://github.com/grandyang/leetcode/issues/64)|32.20%|Medium|

|63|[Unique Paths II](https://github.com/grandyang/leetcode/issues/63)|28.00%|Medium|

|62|[Unique Paths](https://github.com/grandyang/leetcode/issues/62)|32.80%|Medium|

|61|[Rotate List](https://github.com/grandyang/leetcode/issues/61)|21.70%|Medium|

|60|[Permutation Sequence](https://github.com/grandyang/leetcode/issues/60)|22.80%|Medium|

|59|[Spiral Matrix II](https://github.com/grandyang/leetcode/issues/59)|31.80%|Medium|

|58|[Length of Last Word](https://github.com/grandyang/leetcode/issues/58)|28.00%|Easy|

|57|[Insert Interval](https://github.com/grandyang/leetcode/issues/57)|21.40%|Hard|

|56|[Merge Intervals](https://github.com/grandyang/leetcode/issues/56)|22.40%|Hard|

|55|[Jump Game](https://github.com/grandyang/leetcode/issues/55)|27.00%|Medium|

|54|[Spiral Matrix](https://github.com/grandyang/leetcode/issues/54)|20.80%|Medium|

|53|[Maximum Subarray](https://github.com/grandyang/leetcode/issues/53)|34.50%|Medium|

|52|[N-Queens II](https://github.com/grandyang/leetcode/issues/52)|35.80%|Hard|

|51|[N-Queens](https://github.com/grandyang/leetcode/issues/51)|26.50%|Hard|

|50|[Pow(x, n)](https://github.com/grandyang/leetcode/issues/50)|26.70%|

|49|[Anagrams](https://github.com/grandyang/leetcode/issues/49)|24.30%|Medium|

|48|[Rotate Image](https://github.com/grandyang/leetcode/issues/48)|31.90%|Medium|

|47|[Permutations II](https://github.com/grandyang/leetcode/issues/47)|25.80%|Hard|

|46|[Permutations](https://github.com/grandyang/leetcode/issues/46)|31.90%|Medium|

|45|[Jump Game II](https://github.com/grandyang/leetcode/issues/45)|24.20%|Hard|

|44|[Wildcard Matching](https://github.com/grandyang/leetcode/issues/44)|15.00%|Hard|

|43|[Multiply Strings](https://github.com/grandyang/leetcode/issues/43)|21.00%|Medium|

|42|[Trapping Rain Water](https://github.com/grandyang/leetcode/issues/42)|30.00%|Hard|

|41|[First Missing Positive](https://github.com/grandyang/leetcode/issues/41)|22.90%|Hard|

|40|[Combination Sum II](https://github.com/grandyang/leetcode/issues/40)|25.20%|Medium|

|39|[Combination Sum](https://github.com/grandyang/leetcode/issues/39)|27.90%|Medium|

|38|[Count and Say](https://github.com/grandyang/leetcode/issues/38)|25.20%|Easy|

|37|[Sudoku Solver](https://github.com/grandyang/leetcode/issues/37)|21.80%|Hard|

|36|[Valid Sudoku](https://github.com/grandyang/leetcode/issues/36)|27.20%|Easy|

|35|[Search Insert Position](https://github.com/grandyang/leetcode/issues/35)|35.40%|Medium|

|34|[Search for a Range](https://github.com/grandyang/leetcode/issues/34)|27.50%|Medium|

|33|[Search in Rotated Sorted Array](https://github.com/grandyang/leetcode/issues/33)|28.80%|Hard|

|32|[Longest Valid Parentheses](https://github.com/grandyang/leetcode/issues/32)|20.90%|Hard|

|31|[Next Permutation](https://github.com/grandyang/leetcode/issues/31)|25.00%|Medium|

|30|[Substring with Concatenation of All Words](https://github.com/grandyang/leetcode/issues/30)|19.40%|Hard|

|29|[Divide Two Integers](https://github.com/grandyang/leetcode/issues/29)|15.00%|Medium|

|28|[Implement strStr()](https://github.com/grandyang/leetcode/issues/28)|22.20%|Easy|

|27|[Remove Element](https://github.com/grandyang/leetcode/issues/27)|32.10%|Easy|

|26|[Remove Duplicates from Sorted Array](https://github.com/grandyang/leetcode/issues/26)|31.30%|Easy|

|25|[Reverse Nodes in k-Group](https://github.com/grandyang/leetcode/issues/25)|25.50%|Hard|

|24|[Swap Nodes in Pairs](https://github.com/grandyang/leetcode/issues/24)|32.50%|Medium|

|23|[Merge k Sorted Lists](https://github.com/grandyang/leetcode/issues/23)|21.10%|Hard|

|22|[Generate Parentheses](https://github.com/grandyang/leetcode/issues/22)|32.60%|Medium|

|21|[Merge Two Sorted Lists](https://github.com/grandyang/leetcode/issues/21)|32.70%|Easy|

|20|[Valid Parentheses](https://github.com/grandyang/leetcode/issues/20)|26.50%|Easy|

|19|[Remove Nth Node From End of List](https://github.com/grandyang/leetcode/issues/19)|27.10%|Easy|

|18|[4Sum](https://github.com/grandyang/leetcode/issues/18)|21.70%|Medium|

|17|[Letter Combinations of a Phone Number](https://github.com/grandyang/leetcode/issues/17)|25.80%|Medium|

|16|[3Sum Closest](https://github.com/grandyang/leetcode/issues/16)|26.90%|Medium|

|15|[3Sum](https://github.com/grandyang/leetcode/issues/15)|16.90%|Medium|

|14|[Longest Common Prefix](https://github.com/grandyang/leetcode/issues/14)|25.50%|Easy|

|13|[Roman to Integer](https://github.com/grandyang/leetcode/issues/13)|34.00%|Easy|

|12|[Integer to Roman](https://github.com/grandyang/leetcode/issues/12)|33.80%|Medium|

|11|[Container With Most Water](https://github.com/grandyang/leetcode/issues/11)|32.00%|Medium|

|10|[Regular Expression Matching](https://github.com/grandyang/leetcode/issues/10)|20.70%|Hard|

|9|[Palindrome Number](https://github.com/grandyang/leetcode/issues/9)|28.30%|Easy|

|8|[String to Integer (atoi)](https://github.com/grandyang/leetcode/issues/8)|13.00%|Easy|

|7|[Reverse Integer](https://github.com/grandyang/leetcode/issues/7)|25.10%|Easy|

|6|[ZigZag Conversion](https://github.com/grandyang/leetcode/issues/6)|21.80%|Easy|

|5|[Longest Palindromic Substring](https://github.com/grandyang/leetcode/issues/5)|20.70%|Medium|

|4|[Median of Two Sorted Arrays](https://github.com/grandyang/leetcode/issues/4)|17.40%|Hard|

|3|[Longest Substring Without Repeating Characters](https://github.com/grandyang/leetcode/issues/3)|20.60%|Medium|

|2|[Add Two Numbers](https://github.com/grandyang/leetcode/issues/2)|21.10%|Medium|

|1|[Two Sum](https://github.com/grandyang/leetcode/issues/1)|17.70%|Medium|




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## 特别鸣谢

感谢 [@notfresh](https://github.com/notfresh) 童鞋帮助博主从 [Grandyang博客园](https://www.cnblogs.com/grandyang/) 上提取文章的 Markdown 文本。