| 1. 两数之和 | 4 | https://leetcode-cn.com/problems/two-sum |
| 剑指 Offer 54. 二叉搜索树的第k大节点 | 3 | https://leetcode-cn.com/problems/er-cha-sou-suo-shu-de-di-kda-jie-dian-lcof |
| 300. 最长上升子序列 | 3 | https://leetcode-cn.com/problems/longest-increasing-subsequence |
| 21. 合并两个有序链表 | 3 | https://leetcode-cn.com/problems/merge-two-sorted-lists |
| 206. 反转链表 | 3 | https://leetcode-cn.com/problems/reverse-linked-list |
| 415. 字符串相加 | 3 | https://leetcode-cn.com/problems/add-strings |
| 141. 环形链表 | 2 | https://leetcode-cn.com/problems/linked-list-cycle |
| 227. 基本计算器 II | 2 | https://leetcode-cn.com/problems/basic-calculator-ii |
| 215. 数组中的第K个最大元素 | 2 | https://leetcode-cn.com/problems/kth-largest-element-in-an-array |
| 704. 二分查找 | 2 | https://leetcode-cn.com/problems/binary-search |
| 151. 翻转字符串里的单词 | 2 | https://leetcode-cn.com/problems/reverse-words-in-a-string |
| 1143. 最长公共子序列 | 2 | https://leetcode-cn.com/problems/longest-common-subsequence |
| 234. 回文链表 | 2 | https://leetcode-cn.com/problems/palindrome-linked-list |
| 补充题4. 手撕快速排序 | 2 | https://leetcode-cn.com/problems/sort-an-array |
| 678. 有效的括号字符串 | 2 | https://leetcode-cn.com/problems/valid-parenthesis-string |
| 4. 寻找两个正序数组的中位数 | 2 | https://leetcode-cn.com/problems/median-of-two-sorted-arrays |
| 62. 不同路径 | 2 | https://leetcode-cn.com/problems/unique-paths |
| 125. 验证回文串 | 2 | https://leetcode-cn.com/problems/valid-palindrome |
| 补充题19. 判断一个点是否在三角形内 | 1 | https://mp.weixin.qq.com/s/qnVUJq4lmnLsXJgyHCXngA |
| 31. 下一个排列 | 1 | https://leetcode-cn.com/problems/next-permutation |
| 160. 相交链表 | 1 | https://leetcode-cn.com/problems/intersection-of-two-linked-lists |
| 剑指 Offer 22. 链表中倒数第k个节点 | 1 | https://leetcode-cn.com/problems/lian-biao-zhong-dao-shu-di-kge-jie-dian-lcof |
| 16. 最接近的三数之和 | 1 | https://leetcode-cn.com/problems/3sum-closest |
| 287. 寻找重复数 | 1 | https://leetcode-cn.com/problems/find-the-duplicate-number |
| 405. 数字转换为十六进制数 | 1 | https://leetcode-cn.com/problems/convert-a-number-to-hexadecimal |
| 207. 课程表 | 1 | https://leetcode-cn.com/problems/course-schedule |
| 补充题6. 手撕堆排序 | 1 | https://leetcode-cn.com/problems/sort-an-array |
| 104. 二叉树的最大深度 | 1 | https://leetcode-cn.com/problems/maximum-depth-of-binary-tree |
| 200. 岛屿数量 | 1 | https://leetcode-cn.com/problems/number-of-islands |
| 45. 跳跃游戏 II | 1 | https://leetcode-cn.com/problems/jump-game-ii |
| 剑指 Offer 41. 数据流中的中位数 | 1 | https://leetcode-cn.com/problems/shu-ju-liu-zhong-de-zhong-wei-shu-lcof |
| 718. 最长重复子数组 | 1 | https://leetcode-cn.com/problems/maximum-length-of-repeated-subarray |
| 10. 正则表达式匹配 | 1 | https://leetcode-cn.com/problems/regular-expression-matching |
| 53. 最大子序和 | 1 | https://leetcode-cn.com/problems/maximum-subarray |
| 剑指 Offer 11. 旋转数组的最小数字 | 1 | https://leetcode-cn.com/problems/xuan-zhuan-shu-zu-de-zui-xiao-shu-zi-lcof |
| 470. 用 Rand7() 实现 Rand10() | 1 | https://leetcode-cn.com/problems/implement-rand10-using-rand7 |
| 20. 有效的括号 | 1 | https://leetcode-cn.com/problems/valid-parentheses |
| 498. 对角线遍历 | 1 | https://leetcode-cn.com/problems/diagonal-traverse |
| 179. 最大数 | 1 | https://leetcode-cn.com/problems/largest-number |
| 236. 二叉树的最近公共祖先 | 1 | https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-tree |
| 153. 寻找旋转排序数组中的最小值 | 1 | https://leetcode-cn.com/problems/find-minimum-in-rotated-sorted-array |
| 128. 最长连续序列 | 1 | https://leetcode-cn.com/problems/longest-consecutive-sequence |
| 43. 字符串相乘 | 1 | https://leetcode-cn.com/problems/multiply-strings |
| 171. Excel表列序号 | 1 | https://leetcode-cn.com/problems/excel-sheet-column-number |
| 876. 链表的中间结点 | 1 | https://leetcode-cn.com/problems/middle-of-the-linked-list |
| 2. 两数相加 | 1 | https://leetcode-cn.com/problems/add-two-numbers |
| 59. 螺旋矩阵 II | 1 | https://leetcode-cn.com/problems/spiral-matrix-ii |
| 1312. 让字符串成为回文串的最少插入次数 | 1 | https://leetcode-cn.com/problems/minimum-insertion-steps-to-make-a-string-palindrome |
| 169. 多数元素 | 1 | https://leetcode-cn.com/problems/majority-element |
| 384. 打乱数组 | 1 | https://leetcode-cn.com/problems/shuffle-an-array |
| 442. 数组中重复的数据 | 1 | https://leetcode-cn.com/problems/find-all-duplicates-in-an-array |
| 144. 二叉树的前序遍历 | 1 | https://leetcode-cn.com/problems/binary-tree-preorder-traversal |
| 692. 前K个高频单词 | 1 | https://leetcode-cn.com/problems/top-k-frequent-words |
| 167. 两数之和 II - 输入有序数组 | 1 | https://leetcode-cn.com/problems/two-sum-ii-input-array-is-sorted |
| 459. 重复的子字符串 | 1 | https://leetcode-cn.com/problems/repeated-substring-pattern |
| 26. 删除排序数组中的重复项 | 1 | https://leetcode-cn.com/problems/remove-duplicates-from-sorted-array |
| 120. 三角形最小路径和 | 1 | https://leetcode-cn.com/problems/triangle |
| 7. 整数反转 | 1 | https://leetcode-cn.com/problems/reverse-integer |
| 54. 螺旋矩阵 | 1 | https://leetcode-cn.com/problems/spiral-matrix |
| 232. 用栈实现队列 | 1 | https://leetcode-cn.com/problems/implement-queue-using-stacks |
| 155. 最小栈 | 1 | https://leetcode-cn.com/problems/min-stack |
| 23. 合并K个排序链表 | 1 | https://leetcode-cn.com/problems/merge-k-sorted-lists |
| 剑指 Offer 10- I. 斐波那契数列 | 1 | https://leetcode-cn.com/problems/fei-bo-na-qi-shu-lie-lcof |
| 887. 鸡蛋掉落 | 1 | https://leetcode-cn.com/problems/super-egg-drop |