| 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)|
| 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)|
| 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 |
| 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)|
| 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)|
| 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)|
| 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)|
| 53 | [一、数字在排序数组中出现的次数](https://www.nowcoder.com/practice/70610bf967994b22bb1c26f9ae901fa2?tpId=13&tqId=11190&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [34. Find First and Last Position of Element in Sorted Array](solutions/34.%20Find%20First%20and%20Last%20Position%20of%20Element%20in%20Sorted%20Array.md) |
| 54 | [二叉搜索树的第k大节点](https://www.nowcoder.com/practice/ef068f602dde4d28aab2b210e859150a?tpId=13&tqId=11215&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [230. Kth Smallest Element in a BST](solutions/230.%20Kth%20Smallest%20Element%20in%20a%20BST.md) |
| 56 | [一、数组中只出现一次的两个数字](https://www.nowcoder.com/practice/e02fdb54d7524710a7d664d082bb7811?tpId=13&tqId=11193&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [260. Single Number III](solutions/260.%20Single%20Number%20III.md) |
| 56 | [二、数组中唯一只出现一次的数字](https://www.nowcoder.com/practice/26e46f1f5e0d48c4b9ba13fe3e8d0ec6?tpId=101&&tqId=33216&rp=1&ru=/activity/oj&qru=/ta/programmer-code-interview-guide/question-ranking) | [137. Single Number II](solutions/137.%20Single%20Number%20II.md) |
| 57 | [一、和为s的两个数字](https://www.nowcoder.com/practice/390da4f7a00f44bea7c2f3d19491311b?tpId=13&tqId=11195&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [167. Two Sum II - Input array is sorted](solutions/167.%20Two%20Sum%20II%20-%20Input%20array%20is%20sorted.md) |
| 58 | [一、翻转单词顺序](https://www.nowcoder.com/practice/3194a4f4cf814f63919d0790578d51f3?tpId=13&tqId=11197&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [151. Reverse Words in a String](solutions/151.%20Reverse%20Words%20in%20a%20String.md) |
|60 | [n个骰子的点数](https://www.nowcoder.com/practice/0e83797c34e54cca91179fe9ad681bc4?tpId=90&&tqId=30849&rp=1&ru=/activity/oj&qru=/ta/2018test/question-ranking) | [1155. Number of Dice Rolls With Target Sum](solutions/1155.%20Number%20of%20Dice%20Rolls%20With%20Target%20Sum.md) | 略有不同 |