Leetcode 题库链接
断断续续刷 Leetcode 题挺久了，做后面题时前面很多题都忘的差不多了，在此弄个已经完成题目汇总贴，并附上每道题目的解题连接，以便日后查阅巩固学习。做题过程借鉴了很多大佬的绝妙想法，非常感谢，在此不一一列出。
| Leetcode 题号 | 题目 | 通过率 | 难易程度 |
|---|---|---|---|
| 1 | Two Sum | 44.3% | Easy |
| 2 | Add Two Numbers | 31.4% | Medium |
| 3 | Longest Substring Without Repeating Characters | 28.6% | Medium |
| 4 | Median of Two Sorted Arrays | 26.8 | Hard |
| 5 | Longest Palindromic Substring | 27.6% | Medium |
| 6 | ZigZag Conversion | 32.5% | Medium |
| 7 | Reverse Integer | 25.4% | Easy |
| 8 | String to Integer (atoi) | 14.7% | Medium |
| 9 | Palindrome Number | 44.0% | Easy |
| 10 | Regular Expression Matching | 25.5% | Hard |
| 11 | Container With Most Water | 45.5% | Medium |
| 12 | Integer to Roman | 51.5% | Medium |
| 13 | Roman to Integer | 52.8% | Easy |
| 14 | Longest Common Prefix | 33.8% | Easy |
| 15 | 3Sum | 24.3% | Medium |
| 17 | Letter Combinations of a Phone Number | 42.2% | Medium |
| 18 | 4Sum | 31.0% | Medium |
| 19 | Remove Nth Node From End of List | 34.4% | Medium |
| 20 | Valid Parentheses | 36.8% | Easy |
| 21 | Merge Two Sorted Lists | 47.9% | Easy |
| 22 | Generate Parentheses | 55.8% | Medium |
| 23 | Merge k Sorted Lists | 35.0% | Hard |
| 26 | Remove Duplicates from Sorted Array | 41.2% | Easy |
| 27 | Remove Element | 45.0% | Easy |
| 28 | Implement strStr() | 32.4% | Easy |
| 29 | Divide Two Integers | 16.2% | Medium |
| 31 | Next Permutation | 30.7% | Medium |
| 32 | Longest Valid Parentheses | 25.8% | Hard |
| 33 | Search in Rotated Sorted Array | 33.0% | Medium |
| 34 | Find First and Last Position of Element in Sorted Array | 33.8% | Medium |
| 35 | Search Insert Position | 41.0% | Easy |
| 36 | Valid Sudoku | 43.8% | Medium |
| 37 | Sudoku Solver | 37.8% | Hard |
| 38 | Count and Say | 41.1% | Easy |
| 39 | Combination Sum | 49.5% | Medium |
| 40 | Combination Sum II | 42.5% | Medium |
| 41 | First Missing Positive | 29.3% | Hard |
| 42 | Trapping Rain Water | 43.7% | Hard |
| 43 | Multiply Strings | 31.0% | Medium |
| 44 | Wildcard Matching | 23.1% | Hard |
| 45 | Jump Game II | 28.4% | Hard |
| 46 | Permutations | 56.2% | Medium |
| 47 | Permutations II | 41.3% | Medium |
| 48 | Rotate Image | 49.5% | Medium |
| 49 | Group Anagrams | 47.9% | Medium |
| 50 | Pow(x, n) | 28.2% | Medium |
| 52 | N-Queens II | 52.7% | Hard |
| 53 | Maximum Subarray | 43.9% | Easy |
| 54 | Spiral Matrix | 30.8% | Medium |
| 55 | Jump Game | 32.2% | Medium |
| 56 | Merge Intervals | 36.0% | Medium |
| 57 | Insert Interval | 31.5% | Hard |
| 59 | Spiral Matrix II | 47.3% | Medium |
| 60 | Permutation Sequence | 33.4% | Medium |
| 62 | Unique Paths | 48.3% | Medium |
| 64 | Minimum Path Sum | 47.7% | Medium |
| 66 | Plus One | 41.5% | Easy |
| 67 | Add Binary | 39.8% | Easy |
| 69 | Sqrt(x) | 31.6% | Easy |
| 70 | Climbing Stairs | 44.6% | Easy |
| 71 | Simplify Path | 29.1% | Medium |
| 72 | Edit Distance | 38.5% | Hard |
| 74 | Search a 2D Matrix | 35.0% | Medium |
| 77 | Combinations | 48.6% | Medium |
| 78 | Subsets | 53.8% | Medium |
| 79 | Word Search | 31.8% | Medium |
| 80 | Remove Duplicates from Sorted Array II | 40.8% | Medium |
| 82 | Remove Duplicates from Sorted List II | 33.5% | Medium |
| 83 | Remove Duplicates from Sorted List | 43.0% | Easy |
| 84 | Largest Rectangle in Histogram | 31.6% | Hard |
| 85 | Maximal Rectangle | 33.9% | Hard |
| 88 | Merge Sorted Array | 36.2% | Easy |
| 90 | Subsets II | 43.0% | Medium |
| 91 | Decode Ways | 22.6% | Medium |
| 93 | Restore IP Addresses | 31.8% | Medium |
| 94 | Binary Tree Inorder Traversal | 57.5% | Medium |
| 96 | Unique Binary Search Trees | 46.9% | Medium |
| 98 | Validate Binary Search Tree | 26.0% | Medium |
| 101 | Symmetric Tree | 43.8% | Easy |
| 102 | Binary Tree Level Order Traversal | 49.2% | Medium |
| 103 | Binary Tree Zigzag Level Order Traversal | 42.3% | Medium |
| 104 | Maximum Depth of Binary Tree | 61.2% | Easy |
| 105 | Construct Binary Tree from Preorder and Inorder Traversal | 60.6% | Medium |
| 106 | Construct Binary Tree from Inorder and Postorder Traversal | 63.4% | Medium |
| 108 | Convert Sorted Array to Binary Search Tree | 51.6% | Easy |
| 110 | Balanced Binary Tree | 41.3% | Easy |
| 111 | Minimum Depth of Binary Tree | 35.6% | Easy |
| 112 | Path Sum | 38.2% | Easy |
| 113 | Path Sum II | 41.3% | Medium |
| 115 | Distinct Subsequences | 35.4% | Hard |
| 116 | Populating Next Right Pointers in Each Node | 38.5% | Medium |
| 117 | Populating Next Right Pointers in Each Node II | 34.9% | Medium |
| 120 | Triangle | 39.8% | Medium |
| 121 | Best Time to Buy and Sell Stock | 47.6% | Easy |
| 122 | Best Time to Buy and Sell Stock II | 52.4% | Easy |
| 124 | Binary Tree Maximum Path Sum | 30.4% | Hard |
| 128 | Longest Consecutive Sequence | 42.1% | Hard |
| 130 | Surrounded Regions | 41.7% | Medium |
| 134 | Gas Station | 34.4% | Medium |
| 136 | Single Number | 60.7% | Easy |
| 139 | Word Break | 35.9% | Medium |
| 141 | Linked List Cycle | 37.5% | Easy |
| 142 | Linked List Cycle II | 32.6% | Medium |
| 144 | Binary Tree Preorder Traversal | 51.9% | Medium |
| 145 | Binary Tree Postorder Traversal | 49.3% | Hard |
| 146 | LRU Cache | 26.1% | Medium |
| 148 | Sort List | 36.0% | Medium |
| 150 | Evaluate Reverse Polish Notation | 32.7% | Medium |
| 151 | Reverse Words in a String | 17.1% | Medium |
| 153 | Find Minimum in Rotated Sorted Array | 43.2% | Medium |
| 154 | Find Minimum in Rotated Sorted Array II | 39.5% | Hard |
| 155 | Min Stack | 37.6% | Easy |
| 160 | Intersection of Two Linked Lists | 34.5% | Easy |
| 162 | Find Peak Element | 41.5% | Medium |
| 176 | Second Highest Salary | 27.6% | Easy |
| 191 | Number of 1 Bits | 43.9% | Easy |
| 198 | House Robber | 41.2% | Easy |
| 200 | Number of Islands | 42.1% | Medium |
| 201 | Bitwise AND of Numbers Range | 36.2% | Medium |
| 206 | Reverse Linked List | 55.5% | Easy |
| 209 | Minimum Size Subarray Sum | 35.2% | Medium |
| 213 | House Robber II | 35.4% | Medium |
| 215 | Kth Largest Element in an Array | 48.5% | Medium |
| 216 | Combination Sum III | 52.1% | Medium |
| 217 | Contains Duplicate | 52.5% | Easy |
| 219 | Contains Duplicate II | 35.6% | Easy |
| 220 | Contains Duplicate III | 19.9% | Medium |
| 221 | Maximal Square | 33.4% | Medium |
| 227 | Basic Calculator II | 33.9% | Medium |
| 228 | Summary Ranges | 36.4% | Medium |
| 230 | Kth Smallest Element in a BST | 52.3% | Medium |
| 236 | Lowest Common Ancestor of a Binary Tree | 38.1% | Medium |
| 238 | Product of Array Except Self | 55.7% | Medium |
| 240 | Search a 2D Matrix II | 41.1% | Medium |
| 241 | Different Ways to Add Parentheses | 50.6% | Medium |
| 263 | Ugly Number | 40.8% | Easy |
| 264 | Ugly Number II 丑数 | 36.9% | Medium |
| 322 | Coin Change | 31.1% | Medium |
| 337 | House Robber III | 48.4% | Medium |
| 354 | Russian Doll Envelopes | 34.1% | Hard |
| 393 | UTF-8 Validation | 36.1% | Medium |
| 402 | Remove K Digits | 26.9% | Medium |
| 415 | Add Strings | 44.1% | Easy |
| 432 | All O`one Data Structure | 29.9% | Hard |
| 547 | Friend Circles | 54.1% | Medium |
| 567 | Permutation in String | 38.7% | Medium |
| 674 | Longest Continuous Increasing Subsequence | 44.5% | Easy |
| 695 | Max Area of Island | 57.8% | Medium |
| 746 | Min Cost Climbing Stairs | 47.7% | Easy |
未完待续......