# 《剑指offer》第2版对应LeetCode题目

《剑指offer》第2版中的面试题对应的LeetCode题目。
* 编号：题目在书中的编号；
* 题目：[《牛客网剑指offer专题》](https://www.nowcoder.com/ta/coding-interviews?page=1)对应题目链接，这是第1版的，所以第2版有的题目这里没有；
* LeetCode: 对应LeetCode题目的题解链接；


| 编号 | 题目 | LeetCode | 备注 |
| ---- | --- | ----- | ----- |
| 3 | [数组中重复的数字](https://www.nowcoder.com/practice/623a5ac0ea5b4e5f95552655361ae0a8?tpId=13&tqId=11203&tPage=3&rp=3&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [287. Find the Duplicate Number](solutions/287.%20Find%20the%20Duplicate%20Number.md)| 注意细微差别 |
| 4 | [二维数组中的查找](https://www.nowcoder.com/practice/abc3fe2ce8e146608e868a70efebf62e?tpId=13&tqId=11154&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [240. Search a 2D Matrix II](solutions/240.%20Search%20a%202D%20Matrix%20II.md)|
| 7 | [重建二叉树](https://www.nowcoder.com/practice/8a19cbe657394eeaac2f6ea9b0f6fcf6?tpId=13&tqId=11157&tPage=1&rp=3&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [105. Construct Binary Tree from Preorder and Inorder Traversal](solutions/105.%20Construct%20Binary%20Tree%20from%20Preorder%20and%20Inorder%20Traversal.md)|
| 9 | [用两个栈实现队列](https://www.nowcoder.com/practice/54275ddae22f475981afa2244dd448c6?tpId=13&tqId=11158&tPage=1&rp=3&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [232. Implement Queue using Stacks](solutions/232.%20Implement%20Queue%20using%20Stacks.md)|
| 10 | [斐波那契数列](https://www.nowcoder.com/practice/c6c7742f5ba7442aada113136ddea0c3?tpId=13&tqId=11160&tPage=1&rp=3&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [509. Fibonacci Number](solutions/509.%20Fibonacci%20Number.md), [70. Climbing Stairs](solutions/70.%20Climbing%20Stairs.md)|
| 11 | [旋转数组中的最小数字](https://www.nowcoder.com/practice/9f3231a991af4f55b95579b44b7a01ba?tpId=13&tqId=11159&tPage=1&rp=3&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [153. Find Minimum in Rotated Sorted Array](solutions/153.%20Find%20Minimum%20in%20Rotated%20Sorted%20Array.md)|
| 12 | [矩阵中的路径](https://www.nowcoder.com/practice/c61c6999eecb4b8f88a98f66b273a3cc?tpId=13&tqId=11218&tPage=4&rp=4&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [79. Word Search](solutions/79.%20Word%20Search.md)|
| 15 | [二进制中1的个数](https://www.nowcoder.com/practice/8ee967e43c2c4ec193b040ea7fbb10b8?tpId=13&tqId=11164&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [191. Number of 1 Bits](solutions/191.%20Number%20of%201%20Bits.md)|
| 16 | [数值的整数次方](https://www.nowcoder.com/practice/1a834e5e3e1a4b7ba251417554e07c00?tpId=13&tqId=11165&tPage=1&rp=1&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [50. Pow(x, n)](solutions/50.%20Pow(x%2C%20n).md)|
| 18 | 一、在O(1)时间内删除链表节点 | [237. Delete Node in a Linked List](solutions/237.%20Delete%20Node%20in%20a%20Linked%20List.md)| 略有不同 |
| 18 | [二、删除链表中重复的节点](https://www.nowcoder.com/practice/fc533c45b73a41b0b44ccba763f866ef?tpId=13&tqId=11209&tPage=3&rp=3&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [82. Remove Duplicates from Sorted List II](solutions/82.%20Remove%20Duplicates%20from%20Sorted%20List%20II.md)|
| 19 | [正则表达式匹配](https://www.nowcoder.com/practice/45327ae22b7b413ea21df13ee7d6429c?tpId=13&tqId=11205&tPage=3&rp=3&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [10. Regular Expression Matching](solutions/10.%20Regular%20Expression%20Matching.md)|
| 20 | [表示数值的字符串](https://www.nowcoder.com/practice/6f8c901d091949a5837e24bb82a731f2?tpId=13&tqId=11206&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [65. Valid Number](solutions/65.%20Valid%20Number.md)|
| 21 | [调整数组顺序使奇数位于偶数之前](https://www.nowcoder.com/practice/6f8c901d091949a5837e24bb82a731f2?tpId=13&tqId=11206&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [905. Sort Array By Parity](solutions/905.%20Sort%20Array%20By%20Parity.md)| 要求刚好相反 |
| 22 | [链表中倒数第k个节点](https://www.nowcoder.com/practice/529d3ae5a407492994ad2a246518148a?tpId=13&tqId=11167&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [19. Remove Nth Node From End of List](solutions/19.%20Remove%20Nth%20Node%20From%20End%20of%20List.md)| 查找然后删除 |
| 23 | [链表中环的入口节点](https://www.nowcoder.com/practice/253d2c59ec3e4bc68da16833f79a38e4?tpId=13&tqId=11208&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [142. Linked List Cycle II](solutions/142.%20Linked%20List%20Cycle%20II.md)|  |
| 24 | [反转链表](https://www.nowcoder.com/practice/75e878df47f24fdc9dc3e400ec6058ca?tpId=13&tqId=11168&tPage=1&rp=1&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [206. Reverse Linked List](solutions/206.%20Reverse%20Linked%20List.md)|  |
| 25 | [合并两个排序的链表](https://www.nowcoder.com/practice/d8b6b4358f774294a89de2a6ac4d9337?tpId=13&tqId=11169&tPage=1&rp=1&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [21. Merge Two Sorted Lists](solutions/21.%20Merge%20Two%20Sorted%20Lists.md)|  |
| 26 | [树的子结构](https://www.nowcoder.com/practice/6e196c44c7004d15b1610b9afca8bd88?tpId=13&tqId=11170&tPage=1&rp=1&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [572. Subtree of Another Tree](solutions/572.%20Subtree%20of%20Another%20Tree.md)| 略有不同 |
| 27 | [二叉树的镜像](https://www.nowcoder.com/practice/564f4c26aa584921bc75623e48ca3011?tpId=13&tqId=11171&tPage=1&rp=1&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [226. Invert Binary Tree](solutions/226.%20Invert%20Binary%20Tree.md)|
| 28 | [对称的二叉树](https://www.nowcoder.com/practice/ff05d44dfdb04e1d83bdbdab320efbcb?tpId=13&tqId=11211&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [101. Symmetric Tree](solutions/101.%20Symmetric%20Tree.md)|
| 29 | [顺时针打印矩阵](https://www.nowcoder.com/practice/9b4c81a02cd34f76be2659fa0d54342a?tpId=13&tqId=11172&tPage=1&rp=1&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [54. Spiral Matrix](solutions/54.%20Spiral%20Matrix.md)|
| 30 | [包含min函数的栈](https://www.nowcoder.com/practice/4c776177d2c04c2494f2555c9fcc1e49?tpId=13&tqId=11173&tPage=1&rp=1&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [155. Min Stack](solutions/155.%20Min%20Stack.md)|
| 31 | [栈的压入、弹出序列](https://www.nowcoder.com/practice/d77d11405cc7470d82554cb392585106?tpId=13&tqId=11174&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [946. Validate Stack Sequences](solutions/946.%20Validate%20Stack%20Sequences.md)|
| 32 | [一、不分行从上到下打印二叉树](https://www.nowcoder.com/practice/7fe2212963db4790b57431d9ed259701?tpId=13&tqId=11175&tPage=2&rp=1&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | 无|
| 32 | [二、分行从上到下打印二叉树](https://www.nowcoder.com/practice/445c44d982d04483b04a54f298796288?tpId=13&tqId=11213&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [102. Binary Tree Level Order Traversal](solutions/102.%20Binary%20Tree%20Level%20Order%20Traversal.md)|
| 32 | [三、之字型打印二叉树](https://www.nowcoder.com/practice/91b69814117f4e8097390d107d2efbe0?tpId=13&tqId=11212&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [103. Binary Tree Zigzag Level Order Traversal](solutions/103.%20Binary%20Tree%20Zigzag%20Level%20Order%20Traversal.md)|
| 33 | [二叉搜索树的后序遍历序列](https://www.nowcoder.com/practice/a861533d45854474ac791d90e447bafd?tpId=13&tqId=11176&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | 255. Verify Preorder Sequence in Binary Search Tree | 有锁 |
| 34 | [二叉树中和为某一值的路径](https://www.nowcoder.com/practice/b736e784e3e34731af99065031301bca?tpId=13&tqId=11177&tPage=2&rp=1&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [113. Path Sum II](solutions/113.%20Path%20Sum%20II.md)|
| 35 | [复杂链表的复制](https://www.nowcoder.com/practice/f836b2c43afc4b35ad6adc41ec941dba?tpId=13&tqId=11178&tPage=2&rp=1&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [138. Copy List with Random Pointer](solutions/138.%20Copy%20List%20with%20Random%20Pointer.md)|
| 36 | [二叉搜索树与双向链表](https://www.nowcoder.com/practice/947f6eb80d944a84850b0538bf0ec3a5?tpId=13&tqId=11179&tPage=2&rp=1&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | 426. Convert Binary Search Tree to Sorted Doubly Linked List | 有锁 |
| 37 | [序列化二叉树](https://www.nowcoder.com/practice/cf7e25aa97c04cc1a68c8f040e71fb84?tpId=13&tqId=11214&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [297. Serialize and Deserialize Binary Tree](solutions/297.%20Serialize%20and%20Deserialize%20Binary%20Tree.md)|
| 38 | 字符串的排列 | [46. Permutations](solutions/46.%20Permutations.md)| 无重复元素 |
| 38 | [字符串的排列](https://www.nowcoder.com/practice/fe6b651b66ae47d7acce78ffdd9a96c7?tpId=13&tqId=11180&tPage=2&rp=1&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [47. Permutations II](solutions/47.%20Permutations%20II.md)| 有重复元素 | 
| 38 | 扩展：字符串的组合 | [77. Combinations](solutions/77.%20Combinations.md)| 
| 39 | [数组中出现次数超过一半的数字](https://www.nowcoder.com/practice/e8a1b01a2df14cb2b228b30ee6a92163?tpId=13&tqId=11181&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [169. Majority Element](solutions/169.%20Majority%20Element.md)| 
| 40 | [最小的k个数](https://www.nowcoder.com/practice/6a296eb82cf844ca8539b57c23e6e9bf?tpId=13&tqId=11182&tPage=2&rp=1&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [215. Kth Largest Element in an Array](solutions/215.%20Kth%20Largest%20Element%20in%20an%20Array.md)| 略有不同 |
| 41 | [数据流中的中位数](https://www.nowcoder.com/practice/9be0172896bd43948f8a32fb954e1be1?tpId=13&tqId=11216&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [295. Find Median from Data Stream](solutions/295.%20Find%20Median%20from%20Data%20Stream.md)|
| 42 | [连续子数组的最大和](https://www.nowcoder.com/practice/459bd355da1549fa8a49e350bf3df484?tpId=13&tqId=11183&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [53. Maximum Subarray](solutions/53.%20Maximum%20Subarray.md)|
| 43 | [1到n整数中1出现的次数](https://www.nowcoder.com/practice/bd7f978302044eee894445e244c7eee6?tpId=13&tqId=11184&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [233. Number of Digit One](solutions/233.%20Number%20of%20Digit%20One.md)|
| 44 | 数字序列中某一位的数字 | [400. Nth Digit](solutions/400.%20Nth%20Digit.md)|
| 45 | [把数组排成最小的数](https://www.nowcoder.com/practice/8fecd3f8ba334add803bf2a06af1b993?tpId=13&tqId=11185&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [179. Largest Number](solutions/179.%20Largest%20Number.md)| 刚好相反 |
| 46 | 把数字翻译成字符串 | [91. Decode Ways](solutions/91.%20Decode%20Ways.md)| 略有不同 |
| 47 | 礼物的最大价值 | [64. Minimum Path Sum](solutions/64.%20Minimum%20Path%20Sum.md)| 刚好相反 |
| 48 | [最长不含重复字符的子字符串](https://www.nowcoder.com/practice/59b4ff4167e245c199922880c2733488?tpId=98&&tqId=32985&rp=1&ru=/activity/oj&qru=/ta/2019test/question-ranking) | [3. Longest Substring Without Repeating Characters](solutions/3.%20Longest%20Substring%20Without%20Repeating%20Characters.md)|
| 49 | [丑数](https://www.nowcoder.com/practice/6aa9e04fc3794f68acf8778237ba065b?tpId=13&tqId=11186&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [264. Ugly Number II](solutions/264.%20Ugly%20Number%20II.md)|
| 50 | [一、字符串中第一个只出现一次的字符](https://www.nowcoder.com/practice/1c82e8cf713b4bbeb2a5b31cf5b0417c?tpId=13&tqId=11187&tPage=2&rp=1&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [387. First Unique Character in a String](solutions/387.%20First%20Unique%20Character%20in%20a%20String.md)|
| 50 | [二、字符流中第一个只出现一次的字符](https://www.nowcoder.com/practice/00de97733b8e4f97a3fb5c680ee10720?tpId=13&&tqId=11207&rp=1&ru=/activity/oj&qru=/ta/coding-interviews/question-ranking) | 无 |
| 51 | [数组中的逆序对](https://www.nowcoder.com/practice/96bd6684e04a44eb80e6a68efc0ec6c5?tpId=13&tqId=11188&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [493. Reverse Pairs](solutions/493.%20Reverse%20Pairs.md) | 略有不同 |
| 52 | [两个链表的第一个公共节点](https://www.nowcoder.com/practice/6ab1d9a29e88450685099d45c9e31e46?tpId=13&tqId=11189&tPage=2&rp=1&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [160. Intersection of Two Linked Lists](solutions/160.%20Intersection%20of%20Two%20Linked%20Lists.md) |





## 参考
* [yanring - 剑指offer leetcode 对应](https://gist.github.com/yanring/fd7c494616f99052d1fea3bc788cc800)
* [NeilHUI - 剑指offer leetcode 对应编程练习记录](https://github.com/NeilHUI/LeetCode)