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3 | 3 |
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4 | 4 | |题目|出现次数|链接| |
5 | 5 | |-|-|-| |
6 | | -|215. 数组中的第K个最大元素|11|https://leetcode-cn.com/problems/kth-largest-element-in-an-array| |
| 6 | +|215. 数组中的第K个最大元素|14|https://leetcode-cn.com/problems/kth-largest-element-in-an-array| |
7 | 7 | |236. 二叉树的最近公共祖先|10|https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-tree| |
| 8 | +|48. 旋转图像|9|https://leetcode-cn.com/problems/rotate-image| |
8 | 9 | |206. 反转链表|8|https://leetcode-cn.com/problems/reverse-linked-list| |
9 | | -|48. 旋转图像|7|https://leetcode-cn.com/problems/rotate-image| |
| 10 | +|124. 二叉树中的最大路径和|7|https://leetcode-cn.com/problems/binary-tree-maximum-path-sum| |
10 | 11 | |53. 最大子序和|7|https://leetcode-cn.com/problems/maximum-subarray| |
11 | | -|124. 二叉树中的最大路径和|6|https://leetcode-cn.com/problems/binary-tree-maximum-path-sum| |
12 | 12 | |91. 解码方法|6|https://leetcode-cn.com/problems/decode-ways| |
| 13 | +|151. 翻转字符串里的单词|6|https://leetcode-cn.com/problems/reverse-words-in-a-string| |
| 14 | +|543. 二叉树的直径|6|https://leetcode-cn.com/problems/diameter-of-binary-tree| |
13 | 15 | |297. 二叉树的序列化与反序列化|6|https://leetcode-cn.com/problems/serialize-and-deserialize-binary-tree| |
14 | | -|543. 二叉树的直径|5|https://leetcode-cn.com/problems/diameter-of-binary-tree| |
| 16 | +|146. LRU缓存机制|5|https://leetcode-cn.com/problems/lru-cache| |
15 | 17 | |22. 括号生成|5|https://leetcode-cn.com/problems/generate-parentheses| |
16 | 18 | |47. 全排列 II|5|https://leetcode-cn.com/problems/permutations-ii| |
17 | 19 | |468. 验证IP地址|4|https://leetcode-cn.com/problems/validate-ip-address| |
18 | | -|146. LRU缓存机制|4|https://leetcode-cn.com/problems/lru-cache| |
19 | 20 | |450. 删除二叉搜索树中的节点|4|https://leetcode-cn.com/problems/delete-node-in-a-bst| |
20 | 21 | |94. 二叉树的中序遍历|4|https://leetcode-cn.com/problems/binary-tree-inorder-traversal| |
21 | 22 | |15. 三数之和|4|https://leetcode-cn.com/problems/3sum| |
22 | 23 | |121. 买卖股票的最佳时机|4|https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock| |
23 | | -|151. 翻转字符串里的单词|4|https://leetcode-cn.com/problems/reverse-words-in-a-string| |
| 24 | +|39. 组合总和|4|https://leetcode-cn.com/problems/combination-sum| |
24 | 25 | |1. 两数之和|4|https://leetcode-cn.com/problems/two-sum| |
| 26 | +|3. 无重复字符的最长子串|4|https://leetcode-cn.com/problems/longest-substring-without-repeating-characters| |
25 | 27 | |138. 复制带随机指针的链表|4|https://leetcode-cn.com/problems/copy-list-with-random-pointer| |
26 | 28 | |69. x 的平方根|4|https://leetcode-cn.com/problems/sqrtx| |
27 | 29 | |240. 搜索二维矩阵 II|4|https://leetcode-cn.com/problems/search-a-2d-matrix-ii| |
28 | 30 | |4. 寻找两个正序数组的中位数|3|https://leetcode-cn.com/problems/median-of-two-sorted-arrays| |
| 31 | +|110. 平衡二叉树|3|https://leetcode-cn.com/problems/balanced-binary-tree| |
29 | 32 | |103. 二叉树的锯齿形层次遍历|3|https://leetcode-cn.com/problems/binary-tree-zigzag-level-order-traversal| |
30 | 33 | |560. 和为K的子数组|3|https://leetcode-cn.com/problems/subarray-sum-equals-k| |
31 | 34 | |162. 寻找峰值|3|https://leetcode-cn.com/problems/find-peak-element| |
32 | 35 | |62. 不同路径|3|https://leetcode-cn.com/problems/unique-paths| |
33 | | -|39. 组合总和|3|https://leetcode-cn.com/problems/combination-sum| |
34 | | -|3. 无重复字符的最长子串|3|https://leetcode-cn.com/problems/longest-substring-without-repeating-characters| |
35 | 36 | |72. 编辑距离|3|https://leetcode-cn.com/problems/edit-distance| |
36 | 37 | |200. 岛屿数量|3|https://leetcode-cn.com/problems/number-of-islands| |
37 | 38 | |89. 格雷编码|3|https://leetcode-cn.com/problems/gray-code| |
38 | 39 | |98. 验证二叉搜索树|3|https://leetcode-cn.com/problems/validate-binary-search-tree| |
| 40 | +|152. 乘积最大子数组|3|https://leetcode-cn.com/problems/maximum-product-subarray| |
39 | 41 | |207. 课程表|3|https://leetcode-cn.com/problems/course-schedule| |
40 | 42 | |384. 打乱数组|3|https://leetcode-cn.com/problems/shuffle-an-array| |
41 | 43 | |36. 有效的数独|3|https://leetcode-cn.com/problems/valid-sudoku| |
42 | 44 | |面试题 08.12. 八皇后|3|https://leetcode-cn.com/problems/eight-queens-lcci| |
43 | 45 | |153. 寻找旋转排序数组中的最小值|3|https://leetcode-cn.com/problems/find-minimum-in-rotated-sorted-array| |
44 | 46 | |剑指 Offer 46. 把数字翻译成字符串|2|https://leetcode-cn.com/problems/ba-shu-zi-fan-yi-cheng-zi-fu-chuan-lcof| |
45 | | -|110. 平衡二叉树|2|https://leetcode-cn.com/problems/balanced-binary-tree| |
46 | 47 | |415. 字符串相加|2|https://leetcode-cn.com/problems/add-strings| |
| 48 | +|547. 省份数量（原朋友圈）|2|https://leetcode-cn.com/problems/number-of-provinces| |
47 | 49 | |34. 在排序数组中查找元素的第一个和最后一个位置|2|https://leetcode-cn.com/problems/find-first-and-last-position-of-element-in-sorted-array| |
48 | 50 | |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| |
49 | 51 | |10. 正则表达式匹配|2|https://leetcode-cn.com/problems/regular-expression-matching| |
50 | 52 | |79. 单词搜索|2|https://leetcode-cn.com/problems/word-search| |
51 | 53 | |剑指 Offer 52. 两个链表的第一个公共节点|2|https://leetcode-cn.com/problems/liang-ge-lian-biao-de-di-yi-ge-gong-gong-jie-dian-lcof| |
52 | 54 | |76. 最小覆盖子串|2|https://leetcode-cn.com/problems/minimum-window-substring| |
| 55 | +|449. 序列化和反序列化二叉搜索树|2|https://leetcode-cn.com/problems/serialize-and-deserialize-bst| |
53 | 56 | |300. 最长上升子序列|2|https://leetcode-cn.com/problems/longest-increasing-subsequence| |
54 | | -|152. 乘积最大子数组|2|https://leetcode-cn.com/problems/maximum-product-subarray| |
55 | 57 | |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| |
56 | 58 | |59. 螺旋矩阵 II|2|https://leetcode-cn.com/problems/spiral-matrix-ii| |
57 | 59 | |25. K 个一组翻转链表|2|https://leetcode-cn.com/problems/reverse-nodes-in-k-group| |
|
69 | 71 | |428. 序列化和反序列化 N 叉树|2|https://leetcode-cn.com/problems/serialize-and-deserialize-n-ary-tree| |
70 | 72 | |64. 最小路径和|2|https://leetcode-cn.com/problems/minimum-path-sum| |
71 | 73 | |105. 从前序与中序遍历序列构造二叉树|2|https://leetcode-cn.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal| |
| 74 | +|40. 组合总和 II|2|https://leetcode-cn.com/problems/combination-sum-ii| |
72 | 75 | |189. 旋转数组|2|https://leetcode-cn.com/problems/rotate-array| |
| 76 | +|33. 搜索旋转排序数组|2|https://leetcode-cn.com/problems/search-in-rotated-sorted-array| |
73 | 77 | |84. 柱状图中最大的矩形|1|https://leetcode-cn.com/problems/largest-rectangle-in-histogram| |
74 | 78 | |120. 三角形最小路径和|1|https://leetcode-cn.com/problems/triangle| |
75 | 79 | |5. 最长回文子串|1|https://leetcode-cn.com/problems/longest-palindromic-substring| |
76 | 80 | |867. 转置矩阵|1|https://leetcode-cn.com/problems/transpose-matrix| |
77 | 81 | |986. 区间列表的交集|1|https://leetcode-cn.com/problems/interval-list-intersections| |
78 | 82 | |78. 子集|1|https://leetcode-cn.com/problems/subsets| |
79 | 83 | |907. 子数组的最小值之和|1|https://leetcode-cn.com/problems/sum-of-subarray-minimums| |
80 | | -|547. 省份数量（原朋友圈）|1|https://leetcode-cn.com/problems/number-of-provinces| |
81 | 84 | |1013. 将数组分成和相等的三个部分|1|https://leetcode-cn.com/problems/partition-array-into-three-parts-with-equal-sum| |
82 | 85 | |142. 环形链表 II|1|https://leetcode-cn.com/problems/linked-list-cycle-ii| |
83 | 86 | |572. 另一个树的子树|1|https://leetcode-cn.com/problems/subtree-of-another-tree| |
|
97 | 100 | |155. 最小栈|1|https://leetcode-cn.com/problems/min-stack| |
98 | 101 | |1375. 灯泡开关 III|1|https://leetcode-cn.com/problems/bulb-switcher-iii| |
99 | 102 | |662. 二叉树最大宽度|1|https://leetcode-cn.com/problems/maximum-width-of-binary-tree| |
100 | | -|449. 序列化和反序列化二叉搜索树|1|https://leetcode-cn.com/problems/serialize-and-deserialize-bst| |
101 | 103 | |44. 通配符匹配|1|https://leetcode-cn.com/problems/wildcard-matching| |
102 | 104 | |739. 每日温度|1|https://leetcode-cn.com/problems/daily-temperatures| |
103 | 105 | |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| |
|
161 | 163 | |1483. 树节点的第 K 个祖先|1|https://leetcode-cn.com/problems/kth-ancestor-of-a-tree-node| |
162 | 164 | |116. 填充每个节点的下一个右侧节点指针|1|https://leetcode-cn.com/problems/populating-next-right-pointers-in-each-node| |
163 | 165 | |1570. 两个稀疏向量的点积|1|https://leetcode-cn.com/problems/dot-product-of-two-sparse-vectors| |
164 | | -|40. 组合总和 II|1|https://leetcode-cn.com/problems/combination-sum-ii| |
165 | 166 | |628. 三个数的最大乘积|1|https://leetcode-cn.com/problems/maximum-product-of-three-numbers| |
166 | 167 | |145. 二叉树的后序遍历|1|https://leetcode-cn.com/problems/binary-tree-postorder-traversal| |
167 | 168 | |46. 全排列|1|https://leetcode-cn.com/problems/permutations| |
|
176 | 177 | |17. 电话号码的字母组合|1|https://leetcode-cn.com/problems/letter-combinations-of-a-phone-number| |
177 | 178 | |1143. 最长公共子序列|1|https://leetcode-cn.com/problems/longest-common-subsequence| |
178 | 179 | |179. 最大数|1|https://leetcode-cn.com/problems/largest-number| |
179 | | -|33. 搜索旋转排序数组|1|https://leetcode-cn.com/problems/search-in-rotated-sorted-array| |
180 | 180 | |513. 找树左下角的值|1|https://leetcode-cn.com/problems/find-bottom-left-tree-value| |
| 181 | +|133. 克隆图|1|https://leetcode-cn.com/problems/clone-graph| |
| 182 | +|99. 恢复二叉搜索树|1|https://leetcode-cn.com/problems/recover-binary-search-tree| |
| 183 | +|剑指 Offer 48. 最长不含重复字符的子字符串|1|https://leetcode-cn.com/problems/zui-chang-bu-han-zhong-fu-zi-fu-de-zi-zi-fu-chuan-lcof| |
| 184 | +|168. Excel表列名称|1|https://leetcode-cn.com/problems/excel-sheet-column-title| |
| 185 | +|2. 两数相加|1|https://leetcode-cn.com/problems/add-two-numbers| |
| 186 | +|337. 打家劫舍 III|1|https://leetcode-cn.com/problems/house-robber-iii| |