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LeetCode 刷题记录\n是否完成|题目|要点\n--|--|----\n [x] | 1-Two Sum | 注意审题，不要简单问题复杂化\n [x] | 2-Add Two Numbers | 大整数运算\n [x] | 3-Longest Substring Without Repeating Characters |需要维护一个映射\n [x] | 5-Longest Palindromic Substring | 简单回文串计算\n [x] | 6-ZigZag Conversion | 简单字符串处理\n [x] | 7-Reverse Integer | 简单字符串处理，这里用这道题练习了下正则表达式\n [x] | 8-String to Integer (atoi) | 字符串题，用正则可以简化问题\n [x] | 9-Palindrome Number | 回文串，用Python做简单的不行\n [x] | 11-Container With Most Water | 简单题\n [x] | 12-Integer to Roman | 字符串题\n [x] | 13-Roman to Integer | 字符串题\n [x] | 15-3Sum | 二分查找\n [x] | 17-Letter Combinations of a Phone Number | 简单dfs\n [x] | 19-Remove Nth Node From End of List | 简单链表题\n [x] | 21-Merge Two Sorted Lists | 简单链表合并\n [x] | 27-Remove Element | 简单题\n [x] | 26-Remove Duplicates from Sorted Array | 简单题\n [x] | 28-Implement strStr() | 简单题\n [x] | 33-Search in Rotated Sorted Array | 二分查找变体，Rotated Sorted Array\n [x] | 34-Find First and Last Position of Element in Sorted Array | 二分查找    \n [x] | 35-Search Insert 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