{"id":18463698,"url":"https://github.com/alvii147/leetcode","last_synced_at":"2026-05-09T10:05:42.073Z","repository":{"id":134303964,"uuid":"384289455","full_name":"alvii147/leetcode","owner":"alvii147","description":"LeetCode problems \u0026 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Watch](https://hinds-banner.vercel.app/genocide-watch?variant=classic)](https://www.pcrf.net)\n\n# LeetCode Problems \u0026 Solutions\n\n\u003cimg alt=\"LeetCode Logo\" src=\"docs/img/leetcode_logo.png\" width=\"400\"/\u003e\n\nThis repository contains solutions to [LeetCode](https://leetcode.com/) problems.\n\n![LeetCode Stats](https://leetcard.jacoblin.cool/alvii147?theme=nord\u0026font=Capriola)\n\n## Algorithms\n\n\u003cimg alt=\"Algorithms Logo\" src=docs/img/algorithms_logo.png width=\"100\"/\u003e\n\nCompleted **69** out of **2808** (unpaid) problems\n\n![Progress Bar](https://progress-bar.xyz/2)\n\nNo. | Problem | Difficulty | Languages\n--- | --- | --- | ---\n1 | [Two Sum](Algorithms/1_Two_Sum) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n2 | [Add Two Numbers](Algorithms/2_Add_Two_Numbers) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n3 | [Longest Substring Without Repeating Characters](Algorithms/3_Longest_Substring_Without_Repeating_Characters) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n4 | [Median of Two Sorted Arrays](Algorithms/4_Median_of_Two_Sorted_Arrays) | ![Difficulty](https://img.shields.io/badge/Hard-orangered) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n5 | [Longest Palindromic Substring](Algorithms/5_Longest_Palindromic_Substring) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n6 | [Zigzag Conversion](Algorithms/6_ZigZag_Conversion) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n7 | [Reverse Integer](Algorithms/7_Reverse_Integer) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n8 | [String to Integer (atoi)](Algorithms/8_String_to_Integer) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n9 | [Palindrome Number](Algorithms/9_Palindrome_Number) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n10 | [Regular Expression Matching](Algorithms/10_Regular_Expression_Matching) | ![Difficulty](https://img.shields.io/badge/Hard-orangered) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n11 | [Container With Most Water](Algorithms/11_Container_With_Most_Water) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n12 | [Integer to Roman](Algorithms/12_Integer_to_Roman) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n13 | [Roman to Integer](Algorithms/13_Roman_to_Integer) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n14 | [Longest Common Prefix](Algorithms/14_Longest_Common_Prefix) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n15 | [3Sum](Algorithms/15_3Sum) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n16 | [3Sum Closest](Algorithms/16_3Sum_Closest) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n17 | [Letter Combinations of a Phone Number](Algorithms/17_Letter_Combinations_of_a_Phone_Number) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n19 | [Remove Nth Node From End of List](Algorithms/19_Remove_Nth_Node_From_End_of_List) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n20 | [Valid Parentheses](Algorithms/20_Valid_Parentheses) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n21 | [Merge Two Sorted Lists](Algorithms/21_Merge_Two_Sorted_Lists) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n23 | [Merge k Sorted Lists](Algorithms/23_Merge_k_Sorted_Lists) | ![Difficulty](https://img.shields.io/badge/Hard-orangered) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n25 | [Reverse Nodes in k-Group](Algorithms/25_Reverse_Nodes_in_k-Group) | ![Difficulty](https://img.shields.io/badge/Hard-orangered) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n33 | [Search in Rotated Sorted Array](Algorithms/33_Search_in_Rotated_Sorted_Array) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n39 | [Combination Sum](Algorithms/39_Combination_Sum) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n48 | [Rotate Image](Algorithms/48_Rotate_Image) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n49 | [Group Anagrams](Algorithms/49_Group_Anagrams) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n53 | [Maximum Subarray](Algorithms/53_Maximum_Subarray) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n54 | [Spiral Matrix](Algorithms/54_Spiral_Matrix) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n55 | [Jump Game](Algorithms/55_Jump_Game) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n56 | [Merge Intervals](Algorithms/56_Merge_Intervals) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n57 | [Insert Interval](Algorithms/57_Insert_Interval) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n59 | [Spiral Matrix II](Algorithms/59_Spiral_Matrix_II) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n62 | [Unique Paths](Algorithms/62_Unique_Paths) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n68 | [Text Justification](Algorithms/68_Text_Justification) | ![Difficulty](https://img.shields.io/badge/Hard-orangered) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n70 | [Climbing Stairs](Algorithms/70_Climbing_Steps) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n76 | [Minimum Window Substring](Algorithms/76_Minimum_Window_Substring) | ![Difficulty](https://img.shields.io/badge/Hard-orangered) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n79 | [Word Search](Algorithms/79_Word_Search) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n128 | [Longest Consecutive Sequence](Algorithms/128_Longest_Consecutive_Sequence) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n133 | [Clone Graph](Algorithms/133_Clone_Graph) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n139 | [Word Break](Algorithms/139_Word_Break) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n141 | [Linked List Cycle](Algorithms/141_Linked_List_Cycle) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n143 | [Reorder List](Algorithms/143_Reorder_List) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n152 | [Maximum Product Subarray](Algorithms/152_Maximum_Product_Subarray) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n153 | [Find Minimum in Rotated Sorted Array](Algorithms/153_Find_Minimum_in_Rotated_Sorted_Array) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n190 | [Reverse Bits](Algorithms/190_Reverse_Bits) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n191 | [Number of 1 Bits](Algorithms/191_Number_of_1_Bits) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n198 | [House Robber](Algorithms/198_House_Robber) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n200 | [Number of Islands](Algorithms/200_Number_of_Islands) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n215 | [Kth Largest Element in an Array](Algorithms/215_Kth_Largest_Element_in_an_Array) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n224 | [Basic Calculator](Algorithms/224_Basic_Calculator) | ![Difficulty](https://img.shields.io/badge/Hard-orangered) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n230 | [Kth Smallest Element in a BST](Algorithms/230_Kth_Smallest_Element_in_a_BST) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n268 | [Missing Number](Algorithms/268_Missing_Number) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n295 | [Find Median from Data Stream](Algorithms/295_Find_Median_from_Data_Stream) | ![Difficulty](https://img.shields.io/badge/Hard-orangered) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n297 | [Serialize and Deserialize Binary Tree](Algorithms/297_Serialize_and_Deserialize_Binary_Tree) | ![Difficulty](https://img.shields.io/badge/Hard-orangered) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n300 | [Longest Increasing Subsequence](Algorithms/300_Longest_Increasing_Subsequence) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n322 | [Coin Change](Algorithms/322_Coin_Change) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n417 | [Pacific Atlantic Water Flow](Algorithms/417_Pacific_Atlantic_Water_Flow) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n424 | [Longest Repeating Character Replacement](Algorithms/424_Longest_Repeating_Character_Replacement) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n435 | [Non-overlapping Intervals](Algorithms/435_Non-overlapping_Intervals) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n438 | [Find All Anagrams in a String](Algorithms/438_Find_All_Anagrams_in_a_String) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n525 | [Contiguous Array](Algorithms/525_Contiguous_Array) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n572 | [Subtree of Another Tree](Algorithms/572_Subtree_of_Another_Tree) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n647 | [Palindromic Substrings](Algorithms/647_Palindrome_Substrings) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n697 | [Degree of an Array](Algorithms/697_Degree_of_an_Array) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n981 | [Time Based Key-Value Store](Algorithms/981_Time_Based_Key-Value_Store) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n994 | [Rotting Oranges](Algorithms/994_Rotting_Oranges) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n1391 | [Check if There is a Valid Path in a Grid](Algorithms/1391_Check_if_There_is_a_Valid_Path_in_a_Grid) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n2043 | [Simple Bank System](Algorithms/2043_Simple_Bank_System) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n2270 | [Number of Ways to Split Array](Algorithms/2270_Number_of_Ways_to_Split_Array) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54)\n\n## Database\n\n\u003cimg alt=\"Database Logo\" src=docs/img/database_logo.png width=\"100\"/\u003e\n\nCompleted **36** out of **100** (unpaid) problems\n\n![Progress Bar](https://progress-bar.xyz/36)\n\nNo. | Problem | Difficulty | Languages\n--- | --- | --- | ---\n175 | [Combine Two Tables](Database/175_Combine_Two_Tables) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n176 | [Second Highest Salary](Database/176_Second_Highest_Salary) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n177 | [Nth Highest Salary](Database/177_Nth_Highest_Salary) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n178 | [Rank Scores](Database/178_Rank_Scores) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n180 | [Consecutive Numbers](Database/180_Consecutive_Numbers) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n181 | [Employees Earning More Than Their Managers](Database/181_Employees_Earning_More_Than_Their_Managers) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n182 | [Duplicate Emails](Database/182_Duplicate_Emails) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n183 | [Customers Who Never Order](Database/183_Customers_Who_Never_Order) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n184 | [Department Highest Salary](Database/184_Department_Highest_Salary) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n185 | [Department Top Three Salaries](Database/185_Department_Top_Three_Salaries) | ![Difficulty](https://img.shields.io/badge/Hard-orangered) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n196 | [Delete Duplicate Emails](Database/196_Delete_Dupicate_Emails) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n197 | [Rising Temperature](Database/197_Rising_Temperature) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n262 | [Trips and Users](Database/262_Trips_and_Users) | ![Difficulty](https://img.shields.io/badge/Hard-orangered) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n511 | [Game Play Analysis I](Database/511_Game_Play_Analysis_I) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n584 | [Find Customer Referee](Database/584_Find_Customer_Referee) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n586 | [Customer Placing the Largest Number of Orders](Database/586_Customer_Placing_the_Largest_Number_of_Orders) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n595 | [Big Countries](Database/595_Big_Countries) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n596 | [Classes With at Least 5 Students](Database/596_Classes_More_Than_5_Students) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n601 | [Human Traffic of Stadium](Database/601_Human_Traffic_of_Stadium) | ![Difficulty](https://img.shields.io/badge/Hard-orangered) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n607 | [Sales Person](Database/607_Sales_Person) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n608 | [Tree Node](Database/608_Tree_Node) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n620 | [Not Boring Movies](Database/620_Not_Boring_Movies) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n626 | [Exchange Seats](Database/626_Exchange_Seats) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n627 | [Swap Salary](Database/627_Swap_Salary) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n1050 | [Actors and Directors Who Cooperated At Least Three Times](Database/1050_Actors_and_Directors_Who_Cooperated_At_Least_Three_Times) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n1084 | [Sales Analysis III](Database/1084_Sales_Analysis_III) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n1141 | [User Activity for the Past 30 Days I](Database/1141_User_Activity_for_the_Past_30_Days_I) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n1148 | [Article Views I](Database/1148_Article_Views_I) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n1179 | [Reformat Department Table](Database/1179_Reformat_Department_Table) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n1393 | [Capital Gain/Loss](Database/1393_Capital_Gain_Loss) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n1407 | [Top Travellers](Database/1407_Top_Travellers) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n1484 | [Group Sold Products By The Date](Database/1484_Group_Sold_Products_By_The_Date) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n1527 | [Patients With a Condition](Database/1527_Patients_With_a_Condition) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n1581 | [Customer Who Visited but Did Not Make Any Transactions](Database/1581_Customer_Who_Visited_but_Did_Not_Make_Any_Transactions) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n1587 | [Bank Account Summary II](Database/1587_Bank_Account_Summary_II) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n1667 | [Fix Names in a Table](Database/1667_Fix_Names_in_a_Table) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/mysql-4479A1?style=for-the-badge\u0026logo=mysql\u0026logoColor=F29111)\n\n## Shell\n\n\u003cimg alt=\"Shell Logo\" src=docs/img/shell_logo.png width=\"100\"/\u003e\n\nCompleted **2** out of **4** (unpaid) problems\n\n![Progress Bar](https://progress-bar.xyz/50)\n\nNo. | Problem | Difficulty | Languages\n--- | --- | --- | ---\n192 | [Word Frequency](Shell/192_Word_Frequency) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/bash-4EAA25?style=for-the-badge\u0026logo=gnubash\u0026logoColor=000000)\n193 | [Valid Phone Numbers](Shell/193_Valid_Phone_Numbers) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/bash-4EAA25?style=for-the-badge\u0026logo=gnubash\u0026logoColor=000000)\n\n## Concurrency\n\n\u003cimg alt=\"Concurrency Logo\" src=docs/img/concurrency_logo.png width=\"100\"/\u003e\n\nCompleted **6** out of **6** (unpaid) problems\n\n![Progress Bar](https://progress-bar.xyz/100)\n\nNo. | Problem | Difficulty | Languages\n--- | --- | --- | ---\n1114 | [Print in Order](Concurrency/1114_Print_in_Order) | ![Difficulty](https://img.shields.io/badge/Easy-lawngreen) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54) ![](https://img.shields.io/badge/go-00ADD8?style=for-the-badge\u0026logo=go\u0026logoColor=FFFFFF)\n1115 | [Print FooBar Alternately](Concurrency/1115_Print_FooBar_Alternately) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54) ![](https://img.shields.io/badge/go-00ADD8?style=for-the-badge\u0026logo=go\u0026logoColor=FFFFFF)\n1116 | [Print Zero Even Odd](Concurrency/1116_Print_Zero_Even_Odd) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54) ![](https://img.shields.io/badge/go-00ADD8?style=for-the-badge\u0026logo=go\u0026logoColor=FFFFFF)\n1117 | [Building H2O](Concurrency/1117_Building_H2O) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54) ![](https://img.shields.io/badge/go-00ADD8?style=for-the-badge\u0026logo=go\u0026logoColor=FFFFFF)\n1195 | [Fizz Buzz Multithreaded](Concurrency/1195_Fizz_Buzz_Multithreaded) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54) ![](https://img.shields.io/badge/go-00ADD8?style=for-the-badge\u0026logo=go\u0026logoColor=FFFFFF)\n1226 | [The Dining Philosophers](Concurrency/1226_The_Dining_Philosophers) | ![Difficulty](https://img.shields.io/badge/Medium-gold) | ![](https://img.shields.io/badge/python-3670A0?style=for-the-badge\u0026logo=python\u0026logoColor=FFDD54) ![](https://img.shields.io/badge/go-00ADD8?style=for-the-badge\u0026logo=go\u0026logoColor=FFFFFF)\n\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Falvii147%2Fleetcode","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Falvii147%2Fleetcode","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Falvii147%2Fleetcode/lists"}