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# 字节跳动最新涉及的leetcode题目
本次统计了2020.07.28~2020.10.23共389篇面经,207道
本次统计了2021.1.1~2021.2.4日牛客上84篇字节跳动面经，共涉及90道算法题。
最近我开发了一个简易版网站https://leetcode-cn.top/
网站比静态的markdown更方便大家按公司/部门/岗位查询题目
欢迎大家前来体验❤️
| 题目 | 出现次数 | 链接 |
|---------------------------------|------|--------------------------------------------------------------------------------------------|
| 3. 无重复字符的最长子串 | 25 | https://leetcode-cn.com/problems/longest-substring-without-repeating-characters |
| 25. K 个一组翻转链表 | 19 | https://leetcode-cn.com/problems/reverse-nodes-in-k-group |
| 15. 三数之和 | 19 | https://leetcode-cn.com/problems/3sum |
| 42. 接雨水 | 18 | https://leetcode-cn.com/problems/trapping-rain-water |
| 415. 字符串相加 | 15 | https://leetcode-cn.com/problems/add-strings |
| 103. 二叉树的锯齿形层次遍历 | 15 | https://leetcode-cn.com/problems/binary-tree-zigzag-level-order-traversal |
| 121. 买卖股票的最佳时机 | 15 | https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock |
| 206. 反转链表 | 14 | https://leetcode-cn.com/problems/reverse-linked-list |
| 1. 两数之和 | 12 | https://leetcode-cn.com/problems/two-sum |
| 199. 二叉树的右视图 | 12 | https://leetcode-cn.com/problems/binary-tree-right-side-view |
| 160. 相交链表 | 11 | https://leetcode-cn.com/problems/intersection-of-two-linked-lists |
| 215. 数组中的第K个最大元素 | 11 | https://leetcode-cn.com/problems/kth-largest-element-in-an-array |
| 232. 用栈实现队列 | 11 | https://leetcode-cn.com/problems/implement-queue-using-stacks |
| 146. LRU缓存机制 | 10 | https://leetcode-cn.com/problems/lru-cache |
| 53. 最大子序和 | 10 | https://leetcode-cn.com/problems/maximum-subarray |
| 155. 最小栈 | 9 | https://leetcode-cn.com/problems/min-stack |
| 20. 有效的括号 | 9 | https://leetcode-cn.com/problems/valid-parentheses |
| 141. 环形链表 | 9 | https://leetcode-cn.com/problems/linked-list-cycle |
| 105. 从前序与中序遍历序列构造二叉树 | 9 | https://leetcode-cn.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal |
| 300. 最长上升子序列 | 9 | https://leetcode-cn.com/problems/longest-increasing-subsequence |
| 21. 合并两个有序链表 | 9 | https://leetcode-cn.com/problems/merge-two-sorted-lists |
| 5. 最长回文子串 | 8 | https://leetcode-cn.com/problems/longest-palindromic-substring |
| 236. 二叉树的最近公共祖先 | 8 | https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-tree |
| 151. 翻转字符串里的单词 | 8 | https://leetcode-cn.com/problems/reverse-words-in-a-string |
| 101. 对称二叉树 | 8 | https://leetcode-cn.com/problems/symmetric-tree |
| 200. 岛屿数量 | 8 | https://leetcode-cn.com/problems/number-of-islands |
| 46. 全排列 | 7 | https://leetcode-cn.com/problems/permutations |
| 198. 打家劫舍 | 7 | https://leetcode-cn.com/problems/house-robber |
| 54. 螺旋矩阵 | 7 | https://leetcode-cn.com/problems/spiral-matrix |
| 98. 验证二叉搜索树 | 7 | https://leetcode-cn.com/problems/validate-binary-search-tree |
| 69. x 的平方根 | 7 | https://leetcode-cn.com/problems/sqrtx |
| 113. 路径总和 II | 6 | https://leetcode-cn.com/problems/path-sum-ii |
| 165. 比较版本号 | 6 | https://leetcode-cn.com/problems/compare-version-numbers |
| 剑指 Offer 22. 链表中倒数第k个节点 | 6 | https://leetcode-cn.com/problems/lian-biao-zhong-dao-shu-di-kge-jie-dian-lcof |
| 92. 反转链表 II | 6 | https://leetcode-cn.com/problems/reverse-linked-list-ii |
| 234. 回文链表 | 6 | https://leetcode-cn.com/problems/palindrome-linked-list |
| 169. 多数元素 | 6 | https://leetcode-cn.com/problems/majority-element |
| 470. 用 Rand7() 实现 Rand10() | 6 | https://leetcode-cn.com/problems/implement-rand10-using-rand7 |
| 41. 缺失的第一个正数 | 6 | https://leetcode-cn.com/problems/first-missing-positive |
| 142. 环形链表 II | 5 | https://leetcode-cn.com/problems/linked-list-cycle-ii |
| 240. 搜索二维矩阵 II | 5 | https://leetcode-cn.com/problems/search-a-2d-matrix-ii |
| 23. 合并K个升序链表 | 5 | https://leetcode-cn.com/problems/merge-k-sorted-lists |
| 88. 合并两个有序数组 | 5 | https://leetcode-cn.com/problems/merge-sorted-array |
| 79. 单词搜索 | 5 | https://leetcode-cn.com/problems/word-search |
| 114. 二叉树展开为链表 | 5 | https://leetcode-cn.com/problems/flatten-binary-tree-to-linked-list |
| 239. 滑动窗口最大值 | 5 | https://leetcode-cn.com/problems/sliding-window-maximum |
| 34. 在排序数组中查找元素的第一个和最后一个位置 | 5 | https://leetcode-cn.com/problems/find-first-and-last-position-of-element-in-sorted-array |
| 739. 每日温度 | 5 | https://leetcode-cn.com/problems/daily-temperatures |
| 287. 寻找重复数 | 5 | https://leetcode-cn.com/problems/find-the-duplicate-number |
| 528. 按权重随机选择 | 4 | https://leetcode-cn.com/problems/random-pick-with-weight |
| 1143. 最长公共子序列 | 4 | https://leetcode-cn.com/problems/longest-common-subsequence |
| 64. 最小路径和 | 4 | https://leetcode-cn.com/problems/minimum-path-sum |
| 70. 爬楼梯 | 4 | https://leetcode-cn.com/problems/climbing-stairs |
| 93. 复原IP地址 | 4 | https://leetcode-cn.com/problems/restore-ip-addresses |
| 24. 两两交换链表中的节点 | 4 | https://leetcode-cn.com/problems/swap-nodes-in-pairs |
| 124. 二叉树中的最大路径和 | 4 | https://leetcode-cn.com/problems/binary-tree-maximum-path-sum |
| 144. 二叉树的前序遍历 | 4 | https://leetcode-cn.com/problems/binary-tree-preorder-traversal |
| 31. 下一个排列 | 4 | https://leetcode-cn.com/problems/next-permutation |
| 110. 平衡二叉树 | 4 | https://leetcode-cn.com/problems/balanced-binary-tree |
| 48. 旋转图像 | 4 | https://leetcode-cn.com/problems/rotate-image |
| 56. 合并区间 | 4 | https://leetcode-cn.com/problems/merge-intervals |
| 242. 有效的字母异位词 | 4 | https://leetcode-cn.com/problems/valid-anagram |
| 104. 二叉树的最大深度 | 4 | https://leetcode-cn.com/problems/maximum-depth-of-binary-tree |
| 148. 排序链表 | 4 | https://leetcode-cn.com/problems/sort-list |
| 94. 二叉树的中序遍历 | 4 | https://leetcode-cn.com/problems/binary-tree-inorder-traversal |
| 958. 二叉树的完全性检验 | 4 | https://leetcode-cn.com/problems/check-completeness-of-a-binary-tree |
| 122. 买卖股票的最佳时机 II | 4 | https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock-ii |
| 4. 寻找两个正序数组的中位数 | 4 | https://leetcode-cn.com/problems/median-of-two-sorted-arrays |
| 518. 零钱兑换 II | 4 | https://leetcode-cn.com/problems/coin-change-2 |
| 443. 压缩字符串 | 3 | https://leetcode-cn.com/problems/string-compression |
| 76. 最小覆盖子串 | 3 | https://leetcode-cn.com/problems/minimum-window-substring |
| 543. 二叉树的直径 | 3 | https://leetcode-cn.com/problems/diameter-of-binary-tree |
| 662. 二叉树最大宽度 | 3 | https://leetcode-cn.com/problems/maximum-width-of-binary-tree |
| 209. 长度最小的子数组 | 3 | https://leetcode-cn.com/problems/minimum-size-subarray-sum |
| 394. 字符串解码 | 3 | https://leetcode-cn.com/problems/decode-string |
| 468. 验证IP地址 | 3 | https://leetcode-cn.com/problems/validate-ip-address |
| 32. 最长有效括号 | 3 | https://leetcode-cn.com/problems/longest-valid-parentheses |
| 143. 重排链表 | 3 | https://leetcode-cn.com/problems/reorder-list |
| 83. 删除排序链表中的重复元素 | 3 | https://leetcode-cn.com/problems/remove-duplicates-from-sorted-list |
| 230. 二叉搜索树中第K小的元素 | 3 | https://leetcode-cn.com/problems/kth-smallest-element-in-a-bst |
| 315. 计算右侧小于当前元素的个数 | 3 | https://leetcode-cn.com/problems/count-of-smaller-numbers-after-self |
| 460. LFU 缓存 | 3 | https://leetcode-cn.com/problems/lfu-cache |
| 560. 和为K的子数组 | 3 | https://leetcode-cn.com/problems/subarray-sum-equals-k |
| 226. 翻转二叉树 | 3 | https://leetcode-cn.com/problems/invert-binary-tree |
| 112. 路径总和 | 3 | https://leetcode-cn.com/problems/path-sum |
| 102. 二叉树的层序遍历 | 3 | https://leetcode-cn.com/problems/binary-tree-level-order-traversal |
| 2. 两数相加 | 3 | https://leetcode-cn.com/problems/add-two-numbers |
| 862. 和至少为 K 的最短子数组 | 3 | https://leetcode-cn.com/problems/shortest-subarray-with-sum-at-least-k |
| 224. 基本计算器 | 3 | https://leetcode-cn.com/problems/basic-calculator |
| 162. 寻找峰值 | 3 | https://leetcode-cn.com/problems/find-peak-element |
| 39. 组合总和 | 3 | https://leetcode-cn.com/problems/combination-sum |
| 82. 删除排序链表中的重复元素 II | 3 | https://leetcode-cn.com/problems/remove-duplicates-from-sorted-list-ii |
| 71. 简化路径 | 3 | https://leetcode-cn.com/problems/simplify-path |
| 49. 字母异位词分组 | 3 | https://leetcode-cn.com/problems/group-anagrams |
| 670. 最大交换 | 3 | https://leetcode-cn.com/problems/maximum-swap |
| 129. 求根到叶子节点数字之和 | 2 | https://leetcode-cn.com/problems/sum-root-to-leaf-numbers |
| 剑指 Offer 51. 数组中的逆序对 | 2 | https://leetcode-cn.com/problems/shu-zu-zhong-de-ni-xu-dui-lcof |
| 120. 三角形最小路径和 | 2 | https://leetcode-cn.com/problems/triangle |
| 268. 丢失的数字 | 2 | https://leetcode-cn.com/problems/missing-number |
| 1363. 形成三的最大倍数 | 2 | https://leetcode-cn.com/problems/largest-multiple-of-three |
| 123. 买卖股票的最佳时机 III | 2 | https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock-iii |
| 154. 寻找旋转排序数组中的最小值 II | 2 | https://leetcode-cn.com/problems/find-minimum-in-rotated-sorted-array-ii |
| 438. 找到字符串中所有字母异位词 | 2 | https://leetcode-cn.com/problems/find-all-anagrams-in-a-string |
| 147. 对链表进行插入排序 | 2 | https://leetcode-cn.com/problems/insertion-sort-list |
| 210. 课程表 II | 2 | https://leetcode-cn.com/problems/course-schedule-ii |
| 785. 判断二分图 | 2 | https://leetcode-cn.com/problems/is-graph-bipartite |
| 722. 删除注释 | 2 | https://leetcode-cn.com/problems/remove-comments |
| 剑指 Offer 61. 扑克牌中的顺子 | 2 | https://leetcode-cn.com/problems/bu-ke-pai-zhong-de-shun-zi-lcof |
| 33. 搜索旋转排序数组 | 2 | https://leetcode-cn.com/problems/search-in-rotated-sorted-array |
| 14. 最长公共前缀 | 2 | https://leetcode-cn.com/problems/longest-common-prefix |
| 179. 最大数 | 2 | https://leetcode-cn.com/problems/largest-number |
| 238. 除自身以外数组的乘积 | 2 | https://leetcode-cn.com/problems/product-of-array-except-self |
| 85. 最大矩形 | 2 | https://leetcode-cn.com/problems/maximal-rectangle |
| 19. 删除链表的倒数第N个节点 | 2 | https://leetcode-cn.com/problems/remove-nth-node-from-end-of-list |
| 72. 编辑距离 | 2 | https://leetcode-cn.com/problems/edit-distance |
| 134. 加油站 | 2 | https://leetcode-cn.com/problems/gas-station |
| 125. 验证回文串 | 2 | https://leetcode-cn.com/problems/valid-palindrome |
| 26. 删除排序数组中的重复项 | 2 | https://leetcode-cn.com/problems/remove-duplicates-from-sorted-array |
| 329. 矩阵中的最长递增路径 | 2 | https://leetcode-cn.com/problems/longest-increasing-path-in-a-matrix |
| 97. 交错字符串 | 2 | https://leetcode-cn.com/problems/interleaving-string |
| 340. 至多包含 K 个不同字符的最长子串 | 2 | https://leetcode-cn.com/problems/longest-substring-with-at-most-k-distinct-characters |
| 59. 螺旋矩阵 II | 2 | https://leetcode-cn.com/problems/spiral-matrix-ii |
| 135. 分发糖果 | 2 | https://leetcode-cn.com/problems/candy |
| 498. 对角线遍历 | 2 | https://leetcode-cn.com/problems/diagonal-traverse |
| 398. 随机数索引 | 2 | https://leetcode-cn.com/problems/random-pick-index |
| 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 |
| 44. 通配符匹配 | 2 | https://leetcode-cn.com/problems/wildcard-matching |
| 45. 跳跃游戏 II | 2 | https://leetcode-cn.com/problems/jump-game-ii |
| 503. 下一个更大元素 II | 2 | https://leetcode-cn.com/problems/next-greater-element-ii |
| 50. Pow(x, n) | 2 | https://leetcode-cn.com/problems/powx-n |
| 16. 最接近的三数之和 | 2 | https://leetcode-cn.com/problems/3sum-closest |
| 189. 旋转数组 | 2 | https://leetcode-cn.com/problems/rotate-array |
| 77. 组合 | 1 | https://leetcode-cn.com/problems/combinations |
| 75. 颜色分类 | 1 | https://leetcode-cn.com/problems/sort-colors |
| 面试题 03.05. 栈排序 | 1 | https://leetcode-cn.com/problems/sort-of-stacks-lcci |
| 984. 不含 AAA 或 BBB 的字符串 | 1 | https://leetcode-cn.com/problems/string-without-aaa-or-bbb |
| 67. 二进制求和 | 1 | https://leetcode-cn.com/problems/add-binary |
| 680. 验证回文字符串 Ⅱ | 1 | https://leetcode-cn.com/problems/valid-palindrome-ii |
| 1498. 满足条件的子序列数目 | 1 | https://leetcode-cn.com/problems/undefined |
| 376. 摆动序列 | 1 | https://leetcode-cn.com/problems/wiggle-subsequence |
| 213. 打家劫舍 II | 1 | https://leetcode-cn.com/problems/house-robber-ii |
| 86. 分隔链表 | 1 | https://leetcode-cn.com/problems/partition-list |
| 剑指 Offer 28. 对称的二叉树 | 1 | https://leetcode-cn.com/problems/dui-cheng-de-er-cha-shu-lcof |
| 面试题 10.09. 排序矩阵查找 | 1 | https://leetcode-cn.com/problems/sorted-matrix-search-lcci |
| 91. 解码方法 | 1 | https://leetcode-cn.com/problems/decode-ways |
| 321. 拼接最大数 | 1 | https://leetcode-cn.com/problems/create-maximum-number |
| 188. 买卖股票的最佳时机 IV | 1 | https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock-iv |
| 525. 连续数组 | 1 | https://leetcode-cn.com/problems/contiguous-array |
| 78. 子集 | 1 | https://leetcode-cn.com/problems/subsets |
| 109. 有序链表转换二叉搜索树 | 1 | https://leetcode-cn.com/problems/convert-sorted-list-to-binary-search-tree |
| 剑指 Offer 45. 把数组排成最小的数 | 1 | https://leetcode-cn.com/problems/ba-shu-zu-pai-cheng-zui-xiao-de-shu-lcof |
| 704. 二分查找 | 1 | https://leetcode-cn.com/problems/binary-search |
| 440. 字典序的第K小数字 | 1 | https://leetcode-cn.com/problems/k-th-smallest-in-lexicographical-order |
| 136. 只出现一次的数字 | 1 | https://leetcode-cn.com/problems/single-number |
| 260. 只出现一次的数字 III | 1 | https://leetcode-cn.com/problems/single-number-iii |
| 146. LRU 缓存机制 | 1 | https://leetcode-cn.com/problems/lru-cache |
| 62. 不同路径 | 1 | https://leetcode-cn.com/problems/unique-paths |
| 1095. 山脉数组中查找目标值 | 1 | https://leetcode-cn.com/problems/find-in-mountain-array |
| 264. 丑数 II | 1 | https://leetcode-cn.com/problems/ugly-number-ii |
| 668. 乘法表中第k小的数 | 1 | https://leetcode-cn.com/problems/kth-smallest-number-in-multiplication-table |
| 60. 排列序列 | 1 | https://leetcode-cn.com/problems/permutation-sequence |
| 剑指 Offer 58 - II. 左旋转字符串 | 1 | https://leetcode-cn.com/problems/zuo-xuan-zhuan-zi-fu-chuan-lcof |
| 295. 数据流的中位数 | 1 | https://leetcode-cn.com/problems/find-median-from-data-stream |
| 516. 最长回文子序列 | 1 | https://leetcode-cn.com/problems/longest-palindromic-subsequence |
| 349. 两个数组的交集 | 1 | https://leetcode-cn.com/problems/intersection-of-two-arrays |
| 204. 计数质数 | 1 | https://leetcode-cn.com/problems/count-primes |
| 191. 位1的个数 | 1 | https://leetcode-cn.com/problems/number-of-1-bits |
| 402. 移掉K位数字 | 1 | https://leetcode-cn.com/problems/remove-k-digits |
| 895. 最大频率栈 | 1 | https://leetcode-cn.com/problems/maximum-frequency-stack |
| 55. 跳跃游戏 | 1 | https://leetcode-cn.com/problems/jump-game |
| 557. 反转字符串中的单词 III | 1 | https://leetcode-cn.com/problems/reverse-words-in-a-string-iii |
| 325. 和等于 k 的最长子数组长度 | 1 | https://leetcode-cn.com/problems/maximum-size-subarray-sum-equals-k |
| 17. 电话号码的字母组合 | 1 | https://leetcode-cn.com/problems/letter-combinations-of-a-phone-number |
| 7. 整数反转 | 1 | https://leetcode-cn.com/problems/reverse-integer |
| 225. 用队列实现栈 | 1 | https://leetcode-cn.com/problems/implement-stack-using-queues |
| 445. 两数相加 II | 1 | https://leetcode-cn.com/problems/add-two-numbers-ii |
| 1233. 删除子文件夹 | 1 | https://leetcode-cn.com/problems/remove-sub-folders-from-the-filesystem |
| 145. 二叉树的后序遍历 | 1 | https://leetcode-cn.com/problems/binary-tree-postorder-traversal |
| 701. 二叉搜索树中的插入操作 | 1 | https://leetcode-cn.com/problems/insert-into-a-binary-search-tree |
| 138. 复制带随机指针的链表 | 1 | https://leetcode-cn.com/problems/copy-list-with-random-pointer |
| 22. 括号生成 | 1 | https://leetcode-cn.com/problems/generate-parentheses |
| 328. 奇偶链表 | 1 | https://leetcode-cn.com/problems/odd-even-linked-list |
| 951. 翻转等价二叉树 | 1 | https://leetcode-cn.com/problems/flip-equivalent-binary-trees |
| 107. 二叉树的层次遍历 II | 1 | https://leetcode-cn.com/problems/binary-tree-level-order-traversal-ii |
| 99. 恢复二叉搜索树 | 1 | https://leetcode-cn.com/problems/recover-binary-search-tree |
| 164. 最大间距 | 1 | https://leetcode-cn.com/problems/maximum-gap |
| 152. 乘积最大子数组 | 1 | https://leetcode-cn.com/problems/maximum-product-subarray |
| 130. 被围绕的区域 | 1 | https://leetcode-cn.com/problems/surrounded-regions |
| 637. 二叉树的层平均值 | 1 | https://leetcode-cn.com/problems/average-of-levels-in-binary-tree |
| 416. 分割等和子集 | 1 | https://leetcode-cn.com/problems/partition-equal-subset-sum |
| 1047. 删除字符串中的所有相邻重复项 | 1 | https://leetcode-cn.com/problems/remove-all-adjacent-duplicates-in-string |
| 208. 实现 Trie (前缀树) | 1 | https://leetcode-cn.com/problems/implement-trie-prefix-tree |
| 426. 将二叉搜索树转化为排序的双向链表 | 1 | https://leetcode-cn.com/problems/convert-binary-search-tree-to-sorted-doubly-linked-list |
| 863. 二叉树中所有距离为 K 的结点 | 1 | https://leetcode-cn.com/problems/all-nodes-distance-k-in-binary-tree |
| 297. 二叉树的序列化与反序列化 | 1 | https://leetcode-cn.com/problems/serialize-and-deserialize-binary-tree |
| 277. 搜寻名人 | 1 | https://leetcode-cn.com/problems/find-the-celebrity |
| 807. 保持城市天际线 | 1 | https://leetcode-cn.com/problems/max-increase-to-keep-city-skyline |
| 227. 基本计算器 II | 1 | https://leetcode-cn.com/problems/basic-calculator-ii |
| 347. 前 K 个高频元素 | 1 | https://leetcode-cn.com/problems/top-k-frequent-elements |
| 509. 斐波那契数 | 1 | https://leetcode-cn.com/problems/fibonacci-number |
| 456. 132模式 | 1 | https://leetcode-cn.com/problems/132-pattern |
| 139. 单词拆分 | 1 | https://leetcode-cn.com/problems/word-break |
| 977. 有序数组的平方 | 1 | https://leetcode-cn.com/problems/squares-of-a-sorted-array |
| 767. 重构字符串 | 1 | https://leetcode-cn.com/problems/reorganize-string |
| 322. 零钱兑换 | 1 | https://leetcode-cn.com/problems/coin-change |
| 283. 移动零 | 1 | https://leetcode-cn.com/problems/move-zeroes |
| 剑指 Offer 56 - II. 数组中数字出现的次数 II | 1 | https://leetcode-cn.com/problems/shu-zu-zhong-shu-zi-chu-xian-de-ci-shu-ii-lcof |
| 题目 | 出现次数 | 链接 |
|--------------------------|------|----------------------------------------------------------------------------------------------|
| 3. 无重复字符的最长子串 | 6 | https://leetcode-cn.com/problems/longest-substring-without-repeating-characters |
| 15. 三数之和 | 6 | https://leetcode-cn.com/problems/3sum |
| 1143. 最长公共子序列 | 5 | https://leetcode-cn.com/problems/longest-common-subsequence |
| 105. 从前序与中序遍历序列构造二叉树 | 5 | https://leetcode-cn.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal |
| 25. K 个一组翻转链表 | 5 | https://leetcode-cn.com/problems/reverse-nodes-in-k-group |
| 121. 买卖股票的最佳时机 | 4 | https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock |
| 129. 求根到叶子节点数字之和 | 4 | https://leetcode-cn.com/problems/sum-root-to-leaf-numbers |
| 补充题1. 排序奇升偶降链表 | 4 | https://leetcode-cn.com/problems/undefined |
| 53. 最大子序和 | 4 | https://leetcode-cn.com/problems/maximum-subarray |
| 146. LRU缓存机制 | 4 | https://leetcode-cn.com/problems/lru-cache |
| 54. 螺旋矩阵 | 4 | https://leetcode-cn.com/problems/spiral-matrix |
| 695. 岛屿的最大面积 | 3 | https://leetcode-cn.com/problems/max-area-of-island |
| 958. 二叉树的完全性检验 | 3 | https://leetcode-cn.com/problems/check-completeness-of-a-binary-tree |
| 206. 反转链表 | 3 | https://leetcode-cn.com/problems/reverse-linked-list |
| 41. 缺失的第一个正数 | 3 | https://leetcode-cn.com/problems/first-missing-positive |
| 103. 二叉树的锯齿形层次遍历 | 3 | https://leetcode-cn.com/problems/binary-tree-zigzag-level-order-traversal |
| 21. 合并两个有序链表 | 3 | https://leetcode-cn.com/problems/merge-two-sorted-lists |
| 215. 数组中的第K个最大元素 | 3 | https://leetcode-cn.com/problems/kth-largest-element-in-an-array |
| 169. 多数元素 | 2 | https://leetcode-cn.com/problems/majority-element |
| 153. 寻找旋转排序数组中的最小值 | 2 | https://leetcode-cn.com/problems/find-minimum-in-rotated-sorted-array |
| 39. 组合总和 | 2 | https://leetcode-cn.com/problems/combination-sum |
| 165. 比较版本号 | 2 | https://leetcode-cn.com/problems/compare-version-numbers |
| 94. 二叉树的中序遍历 | 2 | https://leetcode-cn.com/problems/binary-tree-inorder-traversal |
| 1. 两数之和 | 2 | https://leetcode-cn.com/problems/two-sum |
| 160. 相交链表 | 2 | https://leetcode-cn.com/problems/intersection-of-two-linked-lists |
| 59. 螺旋矩阵 II | 2 | https://leetcode-cn.com/problems/spiral-matrix-ii |
| 232. 用栈实现队列 | 2 | https://leetcode-cn.com/problems/implement-queue-using-stacks |
| 226. 翻转二叉树 | 2 | https://leetcode-cn.com/problems/invert-binary-tree |
| 112. 路径总和 | 2 | https://leetcode-cn.com/problems/path-sum |
| 518. 零钱兑换 II | 2 | https://leetcode-cn.com/problems/coin-change-2 |
| 113. 路径总和 II | 2 | https://leetcode-cn.com/problems/path-sum-ii |
| 17. 电话号码的字母组合 | 2 | https://leetcode-cn.com/problems/letter-combinations-of-a-phone-number |
| 543. 二叉树的直径 | 2 | https://leetcode-cn.com/problems/diameter-of-binary-tree |
| 807. 保持城市天际线 | 1 | https://leetcode-cn.com/problems/max-increase-to-keep-city-skyline |
| 76. 最小覆盖子串 | 1 | https://leetcode-cn.com/problems/minimum-window-substring |
| 662. 二叉树最大宽度 | 1 | https://leetcode-cn.com/problems/maximum-width-of-binary-tree |
| 404. 左叶子之和 | 1 | https://leetcode-cn.com/problems/sum-of-left-leaves |
| 704. 二分查找 | 1 | https://leetcode-cn.com/problems/binary-search |
| 56. 合并区间 | 1 | https://leetcode-cn.com/problems/merge-intervals |
| 5. 最长回文子串 | 1 | https://leetcode-cn.com/problems/longest-palindromic-substring |
| 155. 最小栈 | 1 | https://leetcode-cn.com/problems/min-stack |
| 33. 搜索旋转排序数组 | 1 | https://leetcode-cn.com/problems/search-in-rotated-sorted-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 |
| 889. 根据前序和后序遍历构造二叉树 | 1 | https://leetcode-cn.com/problems/construct-binary-tree-from-preorder-and-postorder-traversal |
| 10. 正则表达式匹配 | 1 | https://leetcode-cn.com/problems/regular-expression-matching |
| 138. 复制带随机指针的链表 | 1 | https://leetcode-cn.com/problems/copy-list-with-random-pointer |
| 468. 验证IP地址 | 1 | https://leetcode-cn.com/problems/validate-ip-address |
| 148. 排序链表 | 1 | https://leetcode-cn.com/problems/sort-list |
| 415. 字符串相加 | 1 | https://leetcode-cn.com/problems/add-strings |
| 剑指 Offer 05. 替换空格 | 1 | https://leetcode-cn.com/problems/ti-huan-kong-ge-lcof |
| 75. 颜色分类 | 1 | https://leetcode-cn.com/problems/sort-colors |
| 61. 旋转链表 | 1 | https://leetcode-cn.com/problems/rotate-list |
| 279. 完全平方数 | 1 | https://leetcode-cn.com/problems/perfect-squares |
| 143. 重排链表 | 1 | https://leetcode-cn.com/problems/reorder-list |
| 78. 子集 | 1 | https://leetcode-cn.com/problems/subsets |
| 334. 递增的三元子序列 | 1 | https://leetcode-cn.com/problems/increasing-triplet-subsequence |
| 582. 杀死进程 | 1 | https://leetcode-cn.com/problems/kill-process |
| 2. 两数相加 | 1 | https://leetcode-cn.com/problems/add-two-numbers |
| 101. 对称二叉树 | 1 | https://leetcode-cn.com/problems/symmetric-tree |
| 8. 字符串转换整数 (atoi) | 1 | https://leetcode-cn.com/problems/string-to-integer-atoi |
| 557. 反转字符串中的单词 III | 1 | https://leetcode-cn.com/problems/reverse-words-in-a-string-iii |
| 20. 有效的括号 | 1 | https://leetcode-cn.com/problems/valid-parentheses |
| 42. 接雨水 | 1 | https://leetcode-cn.com/problems/trapping-rain-water |
| 141. 环形链表 | 1 | https://leetcode-cn.com/problems/linked-list-cycle |
| 122. 买卖股票的最佳时机 II | 1 | https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock-ii |
| 26. 删除排序数组中的重复项 | 1 | https://leetcode-cn.com/problems/remove-duplicates-from-sorted-array |
| 80. 删除排序数组中的重复项 II | 1 | https://leetcode-cn.com/problems/remove-duplicates-from-sorted-array-ii |
| 62. 不同路径 | 1 | https://leetcode-cn.com/problems/unique-paths |
| 63. 不同路径 II | 1 | https://leetcode-cn.com/problems/unique-paths-ii |
| 剑指 Offer 36. 二叉搜索树与双向链表 | 1 | https://leetcode-cn.com/problems/er-cha-sou-suo-shu-yu-shuang-xiang-lian-biao-lcof |
| 剑指 Offer 46. 把数字翻译成字符串 | 1 | https://leetcode-cn.com/problems/ba-shu-zi-fan-yi-cheng-zi-fu-chuan-lcof |
| 22. 括号生成 | 1 | https://leetcode-cn.com/problems/generate-parentheses |
| 104. 二叉树的最大深度 | 1 | https://leetcode-cn.com/problems/maximum-depth-of-binary-tree |
| 23. 合并K个排序链表 | 1 | https://leetcode-cn.com/problems/merge-k-sorted-lists |
| 69. x 的平方根 | 1 | https://leetcode-cn.com/problems/sqrtx |
| 32. 最长有效括号 | 1 | https://leetcode-cn.com/problems/longest-valid-parentheses |
| 剑指 Offer 10- II. 青蛙跳台阶问题 | 1 | https://leetcode-cn.com/problems/qing-wa-tiao-tai-jie-wen-ti-lcof |
| 84. 柱状图中最大的矩形 | 1 | https://leetcode-cn.com/problems/largest-rectangle-in-histogram |
| 11. 盛最多水的容器 | 1 | https://leetcode-cn.com/problems/container-with-most-water |
| 236. 二叉树的最近公共祖先 | 1 | https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-tree |
| 23. 合并K个升序链表 | 1 | https://leetcode-cn.com/problems/merge-k-sorted-lists |
| 977. 有序数组的平方 | 1 | https://leetcode-cn.com/problems/squares-of-a-sorted-array |
| 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 |
| 300. 最长上升子序列 | 1 | https://leetcode-cn.com/problems/longest-increasing-subsequence |
| 144. 二叉树的前序遍历 | 1 | https://leetcode-cn.com/problems/binary-tree-preorder-traversal |
| 88. 合并两个有序数组 | 1 | https://leetcode-cn.com/problems/merge-sorted-array |
| 402. 移掉K位数字 | 1 | https://leetcode-cn.com/problems/remove-k-digits |
| 102. 二叉树的层序遍历 | 1 | https://leetcode-cn.com/problems/binary-tree-level-order-traversal |
| 225. 用队列实现栈 | 1 | https://leetcode-cn.com/problems/implement-stack-using-queues |
| 199. 二叉树的右视图 | 1 | https://leetcode-cn.com/problems/binary-tree-right-side-view |