| 206. 反转链表 |
15 |
https://leetcode-cn.com/problems/reverse-linked-list |
| 160. 相交链表 |
8 |
https://leetcode-cn.com/problems/intersection-of-two-linked-lists |
| 补充题4. 手撕快速排序 |
7 |
|
| 146. LRU缓存机制 |
7 |
https://leetcode-cn.com/problems/lru-cache |
| 21. 合并两个有序链表 |
7 |
https://leetcode-cn.com/problems/merge-two-sorted-lists |
| 215. 数组中的第K个最大元素 |
7 |
https://leetcode-cn.com/problems/kth-largest-element-in-an-array |
| 88. 合并两个有序数组 |
6 |
https://leetcode-cn.com/problems/merge-sorted-array |
| 141. 环形链表 |
5 |
https://leetcode-cn.com/problems/linked-list-cycle |
| 92. 反转链表 II |
5 |
https://leetcode-cn.com/problems/reverse-linked-list-ii |
| 151. 翻转字符串里的单词 |
5 |
https://leetcode-cn.com/problems/reverse-words-in-a-string |
| 2. 两数相加 |
5 |
https://leetcode-cn.com/problems/add-two-numbers |
| 3. 无重复字符的最长子串 |
5 |
https://leetcode-cn.com/problems/longest-substring-without-repeating-characters |
| 155. 最小栈 |
4 |
https://leetcode-cn.com/problems/min-stack |
| 144. 二叉树的前序遍历 |
4 |
https://leetcode-cn.com/problems/binary-tree-preorder-traversal |
| 136. 只出现一次的数字 |
4 |
https://leetcode-cn.com/problems/single-number |
| 34. 在排序数组中查找元素的第一个和最后一个位置 |
4 |
https://leetcode-cn.com/problems/find-first-and-last-position-of-element-in-sorted-array |
| 20. 有效的括号 |
4 |
https://leetcode-cn.com/problems/valid-parentheses |
| 148. 排序链表 |
4 |
https://leetcode-cn.com/problems/sort-list |
| 24. 两两交换链表中的节点 |
4 |
https://leetcode-cn.com/problems/swap-nodes-in-pairs |
| 415. 字符串相加 |
4 |
https://leetcode-cn.com/problems/add-strings |
| 142. 环形链表 II |
3 |
https://leetcode-cn.com/problems/linked-list-cycle-ii |
| 46. 全排列 |
3 |
https://leetcode-cn.com/problems/permutations |
| 剑指 Offer 10- II. 青蛙跳台阶问题 |
3 |
https://leetcode-cn.com/problems/qing-wa-tiao-tai-jie-wen-ti-lcof |
| 剑指 Offer 22. 链表中倒数第k个节点 |
3 |
https://leetcode-cn.com/problems/lian-biao-zhong-dao-shu-di-kge-jie-dian-lcof |
| 150. 逆波兰表达式求值 |
3 |
https://leetcode-cn.com/problems/evaluate-reverse-polish-notation |
| 94. 二叉树的中序遍历 |
3 |
https://leetcode-cn.com/problems/binary-tree-inorder-traversal |
| 128. 最长连续序列 |
3 |
https://leetcode-cn.com/problems/longest-consecutive-sequence |
| 补充题8. 计算数组的小和 |
3 |
https://mp.weixin.qq.com/s/0ih4W6nawzFUPSj3GOnYTQ |
| 121. 买卖股票的最佳时机 |
3 |
https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock |
| 补充题5. 手撕归并排序 |
3 |
|
| 69. x 的平方根 |
3 |
https://leetcode-cn.com/problems/sqrtx |
| 103. 二叉树的锯齿形层次遍历 |
3 |
https://leetcode-cn.com/problems/binary-tree-zigzag-level-order-traversal |
| 102. 二叉树的层序遍历 |
3 |
https://leetcode-cn.com/problems/binary-tree-level-order-traversal |
| 剑指 Offer 51. 数组中的逆序对 |
3 |
https://leetcode-cn.com/problems/shu-zu-zhong-de-ni-xu-dui-lcof |
| 剑指 Offer 21. 调整数组顺序使奇数位于偶数前面 |
3 |
https://leetcode-cn.com/problems/diao-zheng-shu-zu-shun-xu-shi-qi-shu-wei-yu-ou-shu-qian-mian-lcof |
| 76. 最小覆盖子串 |
3 |
https://leetcode-cn.com/problems/minimum-window-substring |
| 15. 三数之和 |
2 |
https://leetcode-cn.com/problems/3sum |
| 145. 二叉树的后序遍历 |
2 |
https://leetcode-cn.com/problems/binary-tree-postorder-traversal |
| 543. 二叉树的直径 |
2 |
https://leetcode-cn.com/problems/diameter-of-binary-tree |
| 845. 数组中的最长山脉 |
2 |
https://leetcode-cn.com/problems/longest-mountain-in-array |
| 剑指 Offer 18. 删除链表的节点 |
2 |
https://leetcode-cn.com/problems/shan-chu-lian-biao-de-jie-dian-lcof |
| 1143. 最长公共子序列 |
2 |
https://leetcode-cn.com/problems/longest-common-subsequence |
| 剑指 Offer 19. 正则表达式匹配 |
2 |
https://leetcode-cn.com/problems/zheng-ze-biao-da-shi-pi-pei-lcof |
| 509. 斐波那契数 |
2 |
https://leetcode-cn.com/problems/fibonacci-number |
| 226. 翻转二叉树 |
2 |
https://leetcode-cn.com/problems/invert-binary-tree |
| 93. 复原IP地址 |
2 |
https://leetcode-cn.com/problems/restore-ip-addresses |
| 1047. 删除字符串中的所有相邻重复项 |
2 |
https://leetcode-cn.com/problems/remove-all-adjacent-duplicates-in-string |
| 43. 字符串相乘 |
2 |
https://leetcode-cn.com/problems/multiply-strings |
| 113. 路径总和 II |
2 |
https://leetcode-cn.com/problems/path-sum-ii |
| 718. 最长重复子数组 |
2 |
https://leetcode-cn.com/problems/maximum-length-of-repeated-subarray |
| 剑指 Offer 55 - I. 二叉树的深度 |
2 |
https://leetcode-cn.com/problems/er-cha-shu-de-shen-du-lcof |
| 78. 子集 |
2 |
https://leetcode-cn.com/problems/subsets |
| 498. 对角线遍历 |
2 |
https://leetcode-cn.com/problems/diagonal-traverse |
| 122. 买卖股票的最佳时机 II |
2 |
https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock-ii |
| 剑指 Offer 36. 二叉搜索树与双向链表 |
2 |
https://leetcode-cn.com/problems/er-cha-sou-suo-shu-yu-shuang-xiang-lian-biao-lcof |
| 200. 岛屿数量 |
2 |
https://leetcode-cn.com/problems/number-of-islands |
| 33. 搜索旋转排序数组 |
2 |
https://leetcode-cn.com/problems/search-in-rotated-sorted-array |
| 54. 螺旋矩阵 |
2 |
https://leetcode-cn.com/problems/spiral-matrix |
| 225. 用队列实现栈 |
2 |
https://leetcode-cn.com/problems/implement-stack-using-queues |
| 23. 合并K个排序链表 |
2 |
https://leetcode-cn.com/problems/merge-k-sorted-lists |
| 104. 二叉树的最大深度 |
2 |
https://leetcode-cn.com/problems/maximum-depth-of-binary-tree |
| 318. 最大单词长度乘积 |
1 |
https://leetcode-cn.com/problems/maximum-product-of-word-lengths |
| 321. 拼接最大数 |
1 |
https://leetcode-cn.com/problems/create-maximum-number |
| 面试题 17.01. 不用加号的加法 |
1 |
https://leetcode-cn.com/problems/add-without-plus-lcci |
| 468. 验证IP地址 |
1 |
https://leetcode-cn.com/problems/validate-ip-address |
| 16. 最接近的三数之和 |
1 |
https://leetcode-cn.com/problems/3sum-closest |
| 239. 滑动窗口最大值 |
1 |
https://leetcode-cn.com/problems/sliding-window-maximum |
| 470. 用 Rand7() 实现 Rand10() |
1 |
https://leetcode-cn.com/problems/implement-rand10-using-rand7 |
| 8. 字符串转换整数 (atoi) |
1 |
https://leetcode-cn.com/problems/string-to-integer-atoi |
| 剑指 Offer 24. 反转链表 |
1 |
https://leetcode-cn.com/problems/fan-zhuan-lian-biao-lcof |
| 67. 二进制求和 |
1 |
https://leetcode-cn.com/problems/add-binary |
| 450. 删除二叉搜索树中的节点 |
1 |
https://leetcode-cn.com/problems/delete-node-in-a-bst |
| 322. 零钱兑换 |
1 |
https://leetcode-cn.com/problems/coin-change |
| 220. 存在重复元素 III |
1 |
https://leetcode-cn.com/problems/contains-duplicate-iii |
| 剑指 Offer 04. 二维数组中的查找 |
1 |
https://leetcode-cn.com/problems/er-wei-shu-zu-zhong-de-cha-zhao-lcof |
| 48. 旋转图像 |
1 |
https://leetcode-cn.com/problems/rotate-image |
| 337. 打家劫舍 III |
1 |
https://leetcode-cn.com/problems/house-robber-iii |
| 191. 位1的个数 |
1 |
https://leetcode-cn.com/problems/number-of-1-bits |
| 22. 括号生成 |
1 |
https://leetcode-cn.com/problems/generate-parentheses |
| 5. 最长回文子串 |
1 |
https://leetcode-cn.com/problems/longest-palindromic-substring |
| 224. 基本计算器 |
1 |
https://leetcode-cn.com/problems/basic-calculator |
| 701. 二叉搜索树中的插入操作 |
1 |
https://leetcode-cn.com/problems/insert-into-a-binary-search-tree |
| 111. 二叉树的最小深度 |
1 |
https://leetcode-cn.com/problems/minimum-depth-of-binary-tree |
| 110. 平衡二叉树 |
1 |
https://leetcode-cn.com/problems/balanced-binary-tree |
| 210. 课程表 II |
1 |
https://leetcode-cn.com/problems/course-schedule-ii |
| 480. 滑动窗口中位数 |
1 |
https://leetcode-cn.com/problems/sliding-window-median |
| 137. 只出现一次的数字 II |
1 |
https://leetcode-cn.com/problems/single-number-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 |
| 42. 接雨水 |
1 |
https://leetcode-cn.com/problems/trapping-rain-water |
| 82. 删除排序链表中的重复元素 II |
1 |
https://leetcode-cn.com/problems/remove-duplicates-from-sorted-list-ii |
| 230. 二叉搜索树中第K小的元素 |
1 |
https://leetcode-cn.com/problems/kth-smallest-element-in-a-bst |
| 剑指 Offer 10- I. 斐波那契数列 |
1 |
https://leetcode-cn.com/problems/fei-bo-na-qi-shu-lie-lcof |
| 169. 多数元素 |
1 |
https://leetcode-cn.com/problems/majority-element |
| 59. 螺旋矩阵 II |
1 |
https://leetcode-cn.com/problems/spiral-matrix-ii |
| 74. 搜索二维矩阵 |
1 |
https://leetcode-cn.com/problems/search-a-2d-matrix |
| 236. 二叉树的最近公共祖先 |
1 |
https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-tree |
| 1. 两数之和 |
1 |
https://leetcode-cn.com/problems/two-sum |
| 75. 颜色分类 |
1 |
https://leetcode-cn.com/problems/sort-colors |
| 207. 课程表 |
1 |
https://leetcode-cn.com/problems/course-schedule |
| 64. 最小路径和 |
1 |
https://leetcode-cn.com/problems/minimum-path-sum |
| 1156. 单字符重复子串的最大长度 |
1 |
https://leetcode-cn.com/problems/swap-for-longest-repeated-character-substring |
| 剑指 Offer 43. 1～n整数中1出现的次数 |
1 |
https://leetcode-cn.com/problems/1nzheng-shu-zhong-1chu-xian-de-ci-shu-lcof |
| 14. 最长公共前缀 |
1 |
https://leetcode-cn.com/problems/longest-common-prefix |
| 面试题 16.06. 最小差 |
1 |
https://leetcode-cn.com/problems/smallest-difference-lcci |
| 1493. 删掉一个元素以后全为 1 的最长子数组 |
1 |
https://leetcode-cn.com/problems/longest-subarray-of-1s-after-deleting-one-element |
| 剑指 Offer 09. 用两个栈实现队列 |
1 |
https://leetcode-cn.com/problems/yong-liang-ge-zhan-shi-xian-dui-lie-lcof |
| 1027. 最长等差数列 |
1 |
https://leetcode-cn.com/problems/longest-arithmetic-subsequence |
| 1464. 数组中两元素的最大乘积 |
1 |
https://leetcode-cn.com/problems/maximum-product-of-two-elements-in-an-array |
| 235. 二叉搜索树的最近公共祖先 |
1 |
https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-search-tree |
| 204. 计数质数 |
1 |
https://leetcode-cn.com/problems/count-primes |
| 83. 删除排序链表中的重复元素 |
1 |
https://leetcode-cn.com/problems/remove-duplicates-from-sorted-list |
| 958. 二叉树的完全性检验 |
1 |
https://leetcode-cn.com/problems/check-completeness-of-a-binary-tree |
| 312. 戳气球 |
1 |
https://leetcode-cn.com/problems/burst-balloons |
| 剑指 Offer 25. 合并两个排序的链表 |
1 |
https://leetcode-cn.com/problems/he-bing-liang-ge-pai-xu-de-lian-biao-lcof |
| 9. 回文数 |
1 |
https://leetcode-cn.com/problems/palindrome-number |
| 25. K 个一组翻转链表 |
1 |
https://leetcode-cn.com/problems/reverse-nodes-in-k-group |
| 199. 二叉树的右视图 |
1 |
https://leetcode-cn.com/problems/binary-tree-right-side-view |
| 240. 搜索二维矩阵 II |
1 |
https://leetcode-cn.com/problems/search-a-2d-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 |
| 6. Z 字形变换 |
1 |
https://leetcode-cn.com/problems/zigzag-conversion |
| 189. 旋转数组 |
1 |
https://leetcode-cn.com/problems/rotate-array |
| 19. 删除链表的倒数第N个节点 |
1 |
https://leetcode-cn.com/problems/remove-nth-node-from-end-of-list |
| 53. 最大子序和 |
1 |
https://leetcode-cn.com/problems/maximum-subarray |
| 232. 用栈实现队列 |
1 |
https://leetcode-cn.com/problems/implement-queue-using-stacks |
| 572. 另一个树的子树 |
1 |
https://leetcode-cn.com/problems/subtree-of-another-tree |
| 704. 二分查找 |
1 |
https://leetcode-cn.com/problems/binary-search |
| 238. 除自身以外数组的乘积 |
1 |
https://leetcode-cn.com/problems/product-of-array-except-self |
| 剑指 Offer 42. 连续子数组的最大和 |
1 |
https://leetcode-cn.com/problems/lian-xu-zi-shu-zu-de-zui-da-he-lcof |
| 138. 复制带随机指针的链表 |
1 |
https://leetcode-cn.com/problems/copy-list-with-random-pointer |
| 剑指 Offer 32 - III. 从上到下打印二叉树 III |
1 |
https://leetcode-cn.com/problems/cong-shang-dao-xia-da-yin-er-cha-shu-iii-lcof |
| 129. 求根到叶子节点数字之和 |
1 |
https://leetcode-cn.com/problems/sum-root-to-leaf-numbers |
| 101. 对称二叉树 |
1 |
https://leetcode-cn.com/problems/symmetric-tree |
| 540. 有序数组中的单一元素 |
1 |
https://leetcode-cn.com/problems/single-element-in-a-sorted-array |
| 剑指 Offer 12. 矩阵中的路径 |
1 |
https://leetcode-cn.com/problems/ju-zhen-zhong-de-lu-jing-lcof |
| 208. 实现 Trie (前缀树) |
1 |
https://leetcode-cn.com/problems/implement-trie-prefix-tree |
| 剑指 Offer 40. 最小的k个数 |
1 |
https://leetcode-cn.com/problems/zui-xiao-de-kge-shu-lcof |
| 40. 组合总和 II |
1 |
https://leetcode-cn.com/problems/combination-sum-ii |