From b602201349a78400740a22d37eac4d05da7a2c56 Mon Sep 17 00:00:00 2001
From: afatcoder <codetop@qq.com>
Date: Sat, 6 Mar 2021 09:22:04 +0800
Subject: [PATCH] =?UTF-8?q?=E5=BF=AB=E6=89=8B=E5=90=8C=E6=AD=A5=E8=87=B3?=
 =?UTF-8?q?=E7=89=9B=E5=AE=A23.5=E9=9D=A2=E7=BB=8F?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 README.md             |  25 +++---
 kuaishou/algorithm.md |  21 +++--
 kuaishou/backend.md   | 201 +++++++++++++++++++++++-------------------
 kuaishou/client.md    |  39 ++++----
 kuaishou/data.md      |  15 ++--
 kuaishou/frontend.md  |  21 +++--
 kuaishou/latest.md    |  88 ------------------
 kuaishou/test.md      |  20 +++--
 8 files changed, 191 insertions(+), 239 deletions(-)
 delete mode 100644 kuaishou/latest.md

diff --git a/README.md b/README.md
index 6025274..d3711ee 100644
--- a/README.md
+++ b/README.md
@@ -25,6 +25,18 @@
 - [数据开发](https://github.com/afatcoder/LeetcodeTop/blob/master/yuanfudao/data.md)
 </details>
 
+## 快手（更新至牛客3.5日的面经）
+<details>
+<summary>按岗位分类</summary>
+
+- [后端](https://github.com/afatcoder/LeetcodeTop/blob/master/kuaishou/backend.md)
+- [算法](https://github.com/afatcoder/LeetcodeTop/blob/master/kuaishou/algorithm.md)
+- [客户端](https://github.com/afatcoder/LeetcodeTop/blob/master/kuaishou/client.md)
+- [前端](https://github.com/afatcoder/LeetcodeTop/blob/master/kuaishou/frontend.md)
+- [测试](https://github.com/afatcoder/LeetcodeTop/blob/master/kuaishou/test.md)
+- [数据开发](https://github.com/afatcoder/LeetcodeTop/blob/master/kuaishou/data.md)
+</details>
+
 ## 字节跳动（更新至牛客2.28日的面经）
 <details>
 <summary>按岗位分类</summary>
@@ -40,19 +52,6 @@
 ## 微软（更新至牛客11.23日的面经）
 - [SDE](https://github.com/afatcoder/LeetcodeTop/blob/master/microsoft/SDE.md)
 
-## 快手（更新至牛客9.30日的面经）
-<details>
-<summary>按岗位分类</summary>
-
-[9.1~9.31新增题目](https://github.com/afatcoder/LeetcodeTop/blob/master/kuaishou/latest.md)
-- [后端](https://github.com/afatcoder/LeetcodeTop/blob/master/kuaishou/backend.md)
-- [算法](https://github.com/afatcoder/LeetcodeTop/blob/master/kuaishou/algorithm.md)
-- [客户端](https://github.com/afatcoder/LeetcodeTop/blob/master/kuaishou/client.md)
-- [前端](https://github.com/afatcoder/LeetcodeTop/blob/master/kuaishou/frontend.md)
-- [测试](https://github.com/afatcoder/LeetcodeTop/blob/master/kuaishou/test.md)
-- [数据开发](https://github.com/afatcoder/LeetcodeTop/blob/master/kuaishou/data.md)
-</details>
-
 
 ## 百度(更新至牛客8.7日的面经)
 <details>
diff --git a/kuaishou/algorithm.md b/kuaishou/algorithm.md
index bb1118e..26c5974 100644
--- a/kuaishou/algorithm.md
+++ b/kuaishou/algorithm.md
@@ -1,17 +1,22 @@
-算法
+# 算法
+
 |题目|出现次数|链接|
 |-|-|-|
+|103. 二叉树的锯齿形层次遍历|2|https://leetcode-cn.com/problems/binary-tree-zigzag-level-order-traversal|
+|72. 编辑距离|2|https://leetcode-cn.com/problems/edit-distance|
+|46. 全排列|2|https://leetcode-cn.com/problems/permutations|
 |23. 合并K个排序链表|2|https://leetcode-cn.com/problems/merge-k-sorted-lists|
 |206. 反转链表|2|https://leetcode-cn.com/problems/reverse-linked-list|
-|103. 二叉树的锯齿形层次遍历|2|https://leetcode-cn.com/problems/binary-tree-zigzag-level-order-traversal|
+|144. 二叉树的前序遍历|1|https://leetcode-cn.com/problems/binary-tree-preorder-traversal|
+|15. 三数之和|1|https://leetcode-cn.com/problems/3sum|
+|补充题8. 计算数组的小和|1|https://mp.weixin.qq.com/s/0ih4W6nawzFUPSj3GOnYTQ|
+|300. 最长上升子序列|1|https://leetcode-cn.com/problems/longest-increasing-subsequence|
+|199. 二叉树的右视图|1|https://leetcode-cn.com/problems/binary-tree-right-side-view|
 |202. 快乐数|1|https://leetcode-cn.com/problems/happy-number|
 |268. 缺失数字|1|https://leetcode-cn.com/problems/missing-number|
+|121. 买卖股票的最佳时机|1|https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock|
 |补充题4. 手撕快速排序|1||
 |102. 二叉树的层序遍历|1|https://leetcode-cn.com/problems/binary-tree-level-order-traversal|
+|236. 二叉树的最近公共祖先|1|https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-tree|
 |322. 零钱兑换|1|https://leetcode-cn.com/problems/coin-change|
-|226. 翻转二叉树|1|https://leetcode-cn.com/problems/invert-binary-tree|
-|15. 三数之和|1|https://leetcode-cn.com/problems/3sum|
-|300. 最长上升子序列|1|https://leetcode-cn.com/problems/longest-increasing-subsequence|
-|72. 编辑距离|1|https://leetcode-cn.com/problems/edit-distance|
-|46. 全排列|1|https://leetcode-cn.com/problems/permutations|
-|199. 二叉树的右视图|1|https://leetcode-cn.com/problems/binary-tree-right-side-view|
+|226. 翻转二叉树|1|https://leetcode-cn.com/problems/invert-binary-tree|
\ No newline at end of file
diff --git a/kuaishou/backend.md b/kuaishou/backend.md
index 5025b12..42d0726 100644
--- a/kuaishou/backend.md
+++ b/kuaishou/backend.md
@@ -1,123 +1,140 @@
-后端
+# 后端
 |题目|出现次数|链接|
 |-|-|-|
-|206. 反转链表|13|https://leetcode-cn.com/problems/reverse-linked-list|
+|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|
-|215. 数组中的第K个最大元素|5|https://leetcode-cn.com/problems/kth-largest-element-in-an-array|
-|21. 合并两个有序链表|5|https://leetcode-cn.com/problems/merge-two-sorted-lists|
-|88. 合并两个有序数组|4|https://leetcode-cn.com/problems/merge-sorted-array|
-|3. 无重复字符的最长子串|4|https://leetcode-cn.com/problems/longest-substring-without-repeating-characters|
+|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|
-|92. 反转链表 II|4|https://leetcode-cn.com/problems/reverse-linked-list-ii|
-|103. 二叉树的锯齿形层次遍历|3|https://leetcode-cn.com/problems/binary-tree-zigzag-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|
-|415. 字符串相加|3|https://leetcode-cn.com/problems/add-strings|
-|2. 两数相加|3|https://leetcode-cn.com/problems/add-two-numbers|
-|补充题4. 手撕快速排序|3||
+|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|
-|141. 环形链表|3|https://leetcode-cn.com/problems/linked-list-cycle|
-|148. 排序链表|3|https://leetcode-cn.com/problems/sort-list|
-|34. 在排序数组中查找元素的第一个和最后一个位置|3|https://leetcode-cn.com/problems/find-first-and-last-position-of-element-in-sorted-array|
 |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|
-|补充题5. 手撕归并排序|3||
+|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|
-|78. 子集|2|https://leetcode-cn.com/problems/subsets|
-|102. 二叉树的层序遍历|2|https://leetcode-cn.com/problems/binary-tree-level-order-traversal|
-|24. 两两交换链表中的节点|2|https://leetcode-cn.com/problems/swap-nodes-in-pairs|
-|160. 相交链表|2|https://leetcode-cn.com/problems/intersection-of-two-linked-lists|
-|23. 合并K个排序链表|2|https://leetcode-cn.com/problems/merge-k-sorted-lists|
-|155. 最小栈|2|https://leetcode-cn.com/problems/min-stack|
-|33. 搜索旋转排序数组|2|https://leetcode-cn.com/problems/search-in-rotated-sorted-array|
-|142. 环形链表 II|2|https://leetcode-cn.com/problems/linked-list-cycle-ii|
-|剑指 Offer 21. 调整数组顺序使奇数位于偶数前面|2|https://leetcode-cn.com/problems/diao-zheng-shu-zu-shun-xu-shi-qi-shu-wei-yu-ou-shu-qian-mian-lcof|
-|144. 二叉树的前序遍历|2|https://leetcode-cn.com/problems/binary-tree-preorder-traversal|
-|845. 数组中的最长山脉|2|https://leetcode-cn.com/problems/longest-mountain-in-array|
-|104. 二叉树的最大深度|2|https://leetcode-cn.com/problems/maximum-depth-of-binary-tree|
-|1143. 最长公共子序列|2|https://leetcode-cn.com/problems/longest-common-subsequence|
+|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|
-|226. 翻转二叉树|2|https://leetcode-cn.com/problems/invert-binary-tree|
+|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|
-|补充题7. 最长公共子串|2||
+|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|
-|121. 买卖股票的最佳时机|2|https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock|
-|20. 有效的括号|2|https://leetcode-cn.com/problems/valid-parentheses|
+|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|
-|25. K 个一组翻转链表|1|https://leetcode-cn.com/problems/reverse-nodes-in-k-group|
-|207. 课程表|1|https://leetcode-cn.com/problems/course-schedule|
-|240. 搜索二维矩阵 II|1|https://leetcode-cn.com/problems/search-a-2d-matrix-ii|
-|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|
-|6. Z 字形变换|1|https://leetcode-cn.com/problems/zigzag-conversion|
-|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|
-|9. 回文数|1|https://leetcode-cn.com/problems/palindrome-number|
-|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|
-|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|
-|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|
-|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|
-|704. 二分查找|1|https://leetcode-cn.com/problems/binary-search|
-|204. 计数质数|1|https://leetcode-cn.com/problems/count-primes|
-|238. 除自身以外数组的乘积|1|https://leetcode-cn.com/problems/product-of-array-except-self|
-|83. 删除排序链表中的重复元素|1|https://leetcode-cn.com/problems/remove-duplicates-from-sorted-list|
-|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|
-|199. 二叉树的右视图|1|https://leetcode-cn.com/problems/binary-tree-right-side-view|
-|129. 求根到叶子节点数字之和|1|https://leetcode-cn.com/problems/sum-root-to-leaf-numbers|
-|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|
-|101. 对称二叉树|1|https://leetcode-cn.com/problems/symmetric-tree|
-|189. 旋转数组|1|https://leetcode-cn.com/problems/rotate-array|
-|69. x 的平方根|1|https://leetcode-cn.com/problems/sqrtx|
-|76. 最小覆盖子串|1|https://leetcode-cn.com/problems/minimum-window-substring|
-|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|
-|572. 另一个树的子树|1|https://leetcode-cn.com/problems/subtree-of-another-tree|
-|46. 全排列|1|https://leetcode-cn.com/problems/permutations|
-|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|
+|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|
-|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|
+|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|
-|54. 螺旋矩阵|1|https://leetcode-cn.com/problems/spiral-matrix|
+|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|
-|540. 有序数组中的单一元素|1|https://leetcode-cn.com/problems/single-element-in-a-sorted-array|
-|16. 最接近的三数之和|1|https://leetcode-cn.com/problems/3sum-closest|
-|145. 二叉树的后序遍历|1|https://leetcode-cn.com/problems/binary-tree-postorder-traversal|
-|剑指 Offer 12. 矩阵中的路径|1|https://leetcode-cn.com/problems/ju-zhen-zhong-de-lu-jing-lcof|
-|40. 组合总和 II|1|https://leetcode-cn.com/problems/combination-sum-ii|
+|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|
-|321. 拼接最大数|1|https://leetcode-cn.com/problems/create-maximum-number|
-|468. 验证IP地址|1|https://leetcode-cn.com/problems/validate-ip-address|
-|48. 旋转图像|1|https://leetcode-cn.com/problems/rotate-image|
-|470. 用 Rand7() 实现 Rand10()|1|https://leetcode-cn.com/problems/implement-rand10-using-rand7|
+|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|
-|剑指 Offer 24. 反转链表|1|https://leetcode-cn.com/problems/fan-zhuan-lian-biao-lcof|
 |224. 基本计算器|1|https://leetcode-cn.com/problems/basic-calculator|
-|322. 零钱兑换|1|https://leetcode-cn.com/problems/coin-change|
-|110. 平衡二叉树|1|https://leetcode-cn.com/problems/balanced-binary-tree|
-|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|
-|220. 存在重复元素 III|1|https://leetcode-cn.com/problems/contains-duplicate-iii|
+|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|
-|113. 路径总和 II|1|https://leetcode-cn.com/problems/path-sum-ii|
+|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|
-|22. 括号生成|1|https://leetcode-cn.com/problems/generate-parentheses|
-|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|
-|59. 螺旋矩阵 II|1|https://leetcode-cn.com/problems/spiral-matrix-ii|
-|93. 复原IP地址|1|https://leetcode-cn.com/problems/restore-ip-addresses|
+|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|
-|210. 课程表 II|1|https://leetcode-cn.com/problems/course-schedule-ii|
+|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|
-|150. 逆波兰表达式求值|1|https://leetcode-cn.com/problems/evaluate-reverse-polish-notation|
-|137. 只出现一次的数字 II|1|https://leetcode-cn.com/problems/single-number-ii|
-|1. 两数之和|1|https://leetcode-cn.com/problems/two-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 10- I. 斐波那契数列|1|https://leetcode-cn.com/problems/fei-bo-na-qi-shu-lie-lcof|
-|94. 二叉树的中序遍历|1|https://leetcode-cn.com/problems/binary-tree-inorder-traversal|
-|498. 对角线遍历|1|https://leetcode-cn.com/problems/diagonal-traverse|
+|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|
-|236. 二叉树的最近公共祖先|1|https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-tree|
-|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|
\ No newline at end of file
+|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|
\ No newline at end of file
diff --git a/kuaishou/client.md b/kuaishou/client.md
index 3eb28c9..640c106 100644
--- a/kuaishou/client.md
+++ b/kuaishou/client.md
@@ -1,32 +1,21 @@
-客户端
+# 客户端
+
 |题目|出现次数|链接|
 |-|-|-|
 |206. 反转链表|6|https://leetcode-cn.com/problems/reverse-linked-list|
 |142. 环形链表 II|3|https://leetcode-cn.com/problems/linked-list-cycle-ii|
-|剑指 Offer 21. 调整数组顺序使奇数位于偶数前面|2|https://leetcode-cn.com/problems/diao-zheng-shu-zu-shun-xu-shi-qi-shu-wei-yu-ou-shu-qian-mian-lcof|
-|102. 二叉树的层序遍历|2|https://leetcode-cn.com/problems/binary-tree-level-order-traversal|
-|704. 二分查找|2|https://leetcode-cn.com/problems/binary-search|
 |21. 合并两个有序链表|2|https://leetcode-cn.com/problems/merge-two-sorted-lists|
 |78. 子集|2|https://leetcode-cn.com/problems/subsets|
 |103. 二叉树的锯齿形层次遍历|2|https://leetcode-cn.com/problems/binary-tree-zigzag-level-order-traversal|
 |144. 二叉树的前序遍历|2|https://leetcode-cn.com/problems/binary-tree-preorder-traversal|
 |110. 平衡二叉树|2|https://leetcode-cn.com/problems/balanced-binary-tree|
-|69. x 的平方根|1|https://leetcode-cn.com/problems/sqrtx|
-|补充题7. 最长公共子串|1||
-|24. 两两交换链表中的节点|1|https://leetcode-cn.com/problems/swap-nodes-in-pairs|
-|146. LRU缓存机制|1|https://leetcode-cn.com/problems/lru-cache|
-|剑指 Offer 64. 求1+2+…+n|1|https://leetcode-cn.com/problems/qiu-12n-lcof|
-|70. 爬楼梯|1|https://leetcode-cn.com/problems/climbing-stairs|
-|剑指 Offer 24. 反转链表|1|https://leetcode-cn.com/problems/fan-zhuan-lian-biao-lcof|
-|232. 用栈实现队列|1|https://leetcode-cn.com/problems/implement-queue-using-stacks|
-|919. 完全二叉树插入器|1|https://leetcode-cn.com/problems/complete-binary-tree-inserter|
-|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|
-|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|
-|53. 最大子序和|1|https://leetcode-cn.com/problems/maximum-subarray|
-|补充题4. 手撕快速排序|1||
+|剑指 Offer 21. 调整数组顺序使奇数位于偶数前面|2|https://leetcode-cn.com/problems/diao-zheng-shu-zu-shun-xu-shi-qi-shu-wei-yu-ou-shu-qian-mian-lcof|
+|102. 二叉树的层序遍历|2|https://leetcode-cn.com/problems/binary-tree-level-order-traversal|
+|704. 二分查找|2|https://leetcode-cn.com/problems/binary-search|
 |300. 最长上升子序列|1|https://leetcode-cn.com/problems/longest-increasing-subsequence|
 |121. 买卖股票的最佳时机|1|https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock|
 |1. 两数之和|1|https://leetcode-cn.com/problems/two-sum|
+|283. 移动零|1|https://leetcode-cn.com/problems/move-zeroes|
 |415. 字符串相加|1|https://leetcode-cn.com/problems/add-strings|
 |200. 岛屿数量|1|https://leetcode-cn.com/problems/number-of-islands|
 |3. 无重复字符的最长子串|1|https://leetcode-cn.com/problems/longest-substring-without-repeating-characters|
@@ -36,4 +25,18 @@
 |189. 旋转数组|1|https://leetcode-cn.com/problems/rotate-array|
 |459. 重复的子字符串|1|https://leetcode-cn.com/problems/repeated-substring-pattern|
 |129. 求根到叶子节点数字之和|1|https://leetcode-cn.com/problems/sum-root-to-leaf-numbers|
-|312. 戳气球|1|https://leetcode-cn.com/problems/burst-balloons|
\ No newline at end of file
+|312. 戳气球|1|https://leetcode-cn.com/problems/burst-balloons|
+|69. x 的平方根|1|https://leetcode-cn.com/problems/sqrtx|
+|718. 最长重复子数组|1|https://leetcode-cn.com/problems/maximum-length-of-repeated-subarray|
+|24. 两两交换链表中的节点|1|https://leetcode-cn.com/problems/swap-nodes-in-pairs|
+|146. LRU缓存机制|1|https://leetcode-cn.com/problems/lru-cache|
+|剑指 Offer 64. 求1+2+…+n|1|https://leetcode-cn.com/problems/qiu-12n-lcof|
+|70. 爬楼梯|1|https://leetcode-cn.com/problems/climbing-stairs|
+|剑指 Offer 24. 反转链表|1|https://leetcode-cn.com/problems/fan-zhuan-lian-biao-lcof|
+|232. 用栈实现队列|1|https://leetcode-cn.com/problems/implement-queue-using-stacks|
+|919. 完全二叉树插入器|1|https://leetcode-cn.com/problems/complete-binary-tree-inserter|
+|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|
+|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|
+|104. 二叉树的最大深度|1|https://leetcode-cn.com/problems/maximum-depth-of-binary-tree|
+|53. 最大子序和|1|https://leetcode-cn.com/problems/maximum-subarray|
+|补充题4. 手撕快速排序|1||
\ No newline at end of file
diff --git a/kuaishou/data.md b/kuaishou/data.md
index c228716..9f1cd96 100644
--- a/kuaishou/data.md
+++ b/kuaishou/data.md
@@ -1,13 +1,16 @@
-数据研发
+# 数据研发
+
 |题目|出现次数|链接|
 |-|-|-|
+|5. 最长回文子串|1|https://leetcode-cn.com/problems/longest-palindromic-substring|
+|509. 斐波那契数|1|https://leetcode-cn.com/problems/fibonacci-number|
+|34. 在排序数组中查找元素的第一个和最后一个位置|1|https://leetcode-cn.com/problems/find-first-and-last-position-of-element-in-sorted-array|
+|35. 搜索插入位置|1|https://leetcode-cn.com/problems/search-insert-position|
+|93. 复原IP地址|1|https://leetcode-cn.com/problems/restore-ip-addresses|
 |145. 二叉树的后序遍历|1|https://leetcode-cn.com/problems/binary-tree-postorder-traversal|
 |剑指 Offer 24. 反转链表|1|https://leetcode-cn.com/problems/fan-zhuan-lian-biao-lcof|
 |144. 二叉树的前序遍历|1|https://leetcode-cn.com/problems/binary-tree-preorder-traversal|
+|剑指 Offer 27. 二叉树的镜像|1|https://leetcode-cn.com/problems/er-cha-shu-de-jing-xiang-lcof|
 |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|
 |112. 路径总和|1|https://leetcode-cn.com/problems/path-sum|
-|5. 最长回文子串|1|https://leetcode-cn.com/problems/longest-palindromic-substring|
-|509. 斐波那契数|1|https://leetcode-cn.com/problems/fibonacci-number|
-|34. 在排序数组中查找元素的第一个和最后一个位置|1|https://leetcode-cn.com/problems/find-first-and-last-position-of-element-in-sorted-array|
-|35. 搜索插入位置|1|https://leetcode-cn.com/problems/search-insert-position|
-|93. 复原IP地址|1|https://leetcode-cn.com/problems/restore-ip-addresses|
\ No newline at end of file
+|240. 搜索二维矩阵 II|1|https://leetcode-cn.com/problems/search-a-2d-matrix-ii|
\ No newline at end of file
diff --git a/kuaishou/frontend.md b/kuaishou/frontend.md
index 7d7be54..9855140 100644
--- a/kuaishou/frontend.md
+++ b/kuaishou/frontend.md
@@ -1,9 +1,20 @@
-前端
+# 前端
+
 |题目|出现次数|链接|
 |-|-|-|
+|88. 合并两个有序数组|2|https://leetcode-cn.com/problems/merge-sorted-array|
+|3. 无重复字符的最长子串|2|https://leetcode-cn.com/problems/longest-substring-without-repeating-characters|
+|70. 爬楼梯|2|https://leetcode-cn.com/problems/climbing-stairs|
+|384. 打乱数组|2|https://leetcode-cn.com/problems/shuffle-an-array|
+|104. 二叉树的最大深度|1|https://leetcode-cn.com/problems/maximum-depth-of-binary-tree|
+|206. 反转链表|1|https://leetcode-cn.com/problems/reverse-linked-list|
+|46. 全排列|1|https://leetcode-cn.com/problems/permutations|
+|704. 二分查找|1|https://leetcode-cn.com/problems/binary-search|
+|7. 整数反转|1|https://leetcode-cn.com/problems/reverse-integer|
+|121. 买卖股票的最佳时机|1|https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock|
+|509. 斐波那契数|1|https://leetcode-cn.com/problems/fibonacci-number|
+|231. 2的幂|1|https://leetcode-cn.com/problems/power-of-two|
 |剑指 Offer 10- I. 斐波那契数列|1|https://leetcode-cn.com/problems/fei-bo-na-qi-shu-lie-lcof|
+|102. 二叉树的层序遍历|1|https://leetcode-cn.com/problems/binary-tree-level-order-traversal|
 |169. 多数元素|1|https://leetcode-cn.com/problems/majority-element|
-|110. 平衡二叉树|1|https://leetcode-cn.com/problems/balanced-binary-tree|
-|88. 合并两个有序数组|1|https://leetcode-cn.com/problems/merge-sorted-array|
-|704. 二分查找|1|https://leetcode-cn.com/problems/binary-search|
-|509. 斐波那契数|1|https://leetcode-cn.com/problems/fibonacci-number|
\ No newline at end of file
+|110. 平衡二叉树|1|https://leetcode-cn.com/problems/balanced-binary-tree|
\ No newline at end of file
diff --git a/kuaishou/latest.md b/kuaishou/latest.md
deleted file mode 100644
index 75ceeb7..0000000
--- a/kuaishou/latest.md
+++ /dev/null
@@ -1,88 +0,0 @@
-以下为快手牛客面经 9.1~9.31新增的题目数据。
-
-|| 题目                           | 出现次数 | 链接                                                                                                 |
-|------------------------------|------|----------------------------------------------------------------------------------------------------|
-| 206. 反转链表                    | 11   | https://leetcode-cn.com/problems/reverse-linked-list                                               |
-| 补充题4. 手撕快速排序                 | 5    |                                                                                                    |
-| 142. 环形链表 II                 | 5    | https://leetcode-cn.com/problems/linked-list-cycle-ii                                              |
-| 103. 二叉树的锯齿形层次遍历             | 4    | https://leetcode-cn.com/problems/binary-tree-zigzag-level-order-traversal                          |
-| 110. 平衡二叉树                   | 4    | https://leetcode-cn.com/problems/balanced-binary-tree                                              |
-| 102. 二叉树的层序遍历                | 4    | https://leetcode-cn.com/problems/binary-tree-level-order-traversal                                 |
-| 3. 无重复字符的最长子串                | 4    | https://leetcode-cn.com/problems/longest-substring-without-repeating-characters                    |
-| 704. 二分查找                    | 3    | https://leetcode-cn.com/problems/binary-search                                                     |
-| 补充题5. 手撕归并排序                 | 3    |                                                                                                    |
-| 148. 排序链表                    | 3    | https://leetcode-cn.com/problems/sort-list                                                         |
-| 415. 字符串相加                   | 3    | https://leetcode-cn.com/problems/add-strings                                                       |
-| 21. 合并两个有序链表                 | 3    | https://leetcode-cn.com/problems/merge-two-sorted-lists                                            |
-| 509. 斐波那契数                   | 3    | https://leetcode-cn.com/problems/fibonacci-number                                                  |
-| 53. 最大子序和                    | 3    | https://leetcode-cn.com/problems/maximum-subarray                                                  |
-| 78. 子集                       | 3    | https://leetcode-cn.com/problems/subsets                                                           |
-| 23. 合并K个升序链表                 | 3    | https://leetcode-cn.com/problems/merge-k-sorted-lists                                              |
-| 补充题7. 最长公共子串                 | 3    |                                                                                                    |
-| 46. 全排列                      | 2    | https://leetcode-cn.com/problems/permutations                                                      |
-| 2. 两数相加                      | 2    | https://leetcode-cn.com/problems/add-two-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                                    |
-| 160. 相交链表                    | 2    | https://leetcode-cn.com/problems/intersection-of-two-linked-lists                                  |
-| 144. 二叉树的前序遍历                | 2    | https://leetcode-cn.com/problems/binary-tree-preorder-traversal                                    |
-| 5. 最长回文子串                    | 2    | https://leetcode-cn.com/problems/longest-palindromic-substring                                     |
-| 15. 三数之和                     | 2    | https://leetcode-cn.com/problems/3sum                                                              |
-| 24. 两两交换链表中的节点               | 2    | https://leetcode-cn.com/problems/swap-nodes-in-pairs                                               |
-| 145. 二叉树的后序遍历                | 2    | https://leetcode-cn.com/problems/binary-tree-postorder-traversal                                   |
-| 232. 用栈实现队列                  | 2    | https://leetcode-cn.com/problems/implement-queue-using-stacks                                      |
-| 1143. 最长公共子序列                | 2    | https://leetcode-cn.com/problems/longest-common-subsequence                                        |
-| 226. 翻转二叉树                   | 2    | https://leetcode-cn.com/problems/invert-binary-tree                                                |
-| 151. 翻转字符串里的单词               | 2    | https://leetcode-cn.com/problems/reverse-words-in-a-string                                         |
-| 155. 最小栈                     | 2    | https://leetcode-cn.com/problems/min-stack                                                         |
-| 88. 合并两个有序数组                 | 2    | https://leetcode-cn.com/problems/merge-sorted-array                                                |
-| 121. 买卖股票的最佳时机               | 2    | https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock                                   |
-| 129. 求根到叶子节点数字之和             | 2    | https://leetcode-cn.com/problems/sum-root-to-leaf-numbers                                          |
-| 146. LRU缓存机制                 | 2    | https://leetcode-cn.com/problems/lru-cache                                                         |
-| 845. 数组中的最长山脉                | 2    | https://leetcode-cn.com/problems/longest-mountain-in-array                                         |
-| 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           |
-| 剑指 Offer 21. 调整数组顺序使奇数位于偶数前面 | 2    | https://leetcode-cn.com/problems/diao-zheng-shu-zu-shun-xu-shi-qi-shu-wei-yu-ou-shu-qian-mian-lcof |
-| 239. 滑动窗口最大值                 | 1    | https://leetcode-cn.com/problems/sliding-window-maximum                                            |
-| 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                      |
-| 25. K 个一组翻转链表                | 1    | https://leetcode-cn.com/problems/reverse-nodes-in-k-group                                          |
-| 75. 颜色分类                     | 1    | https://leetcode-cn.com/problems/sort-colors                                                       |
-| 647. 回文子串                    | 1    | https://leetcode-cn.com/problems/palindromic-substrings                                            |
-| 143. 重排链表                    | 1    | https://leetcode-cn.com/problems/reorder-list                                                      |
-| 300. 最长上升子序列                 | 1    | https://leetcode-cn.com/problems/longest-increasing-subsequence                                    |
-| 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                                  |
-| 70. 爬楼梯                      | 1    | https://leetcode-cn.com/problems/climbing-stairs                                                   |
-| 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                                  |
-| 1. 两数之和                      | 1    | https://leetcode-cn.com/problems/two-sum                                                           |
-| 459. 重复的子字符串                 | 1    | https://leetcode-cn.com/problems/repeated-substring-pattern                                        |
-| 面试题 16.06. 最小差               | 1    | https://leetcode-cn.com/problems/smallest-difference-lcci                                          |
-| 42. 接雨水                      | 1    | https://leetcode-cn.com/problems/trapping-rain-water                                               |
-| 238. 除自身以外数组的乘积              | 1    | https://leetcode-cn.com/problems/product-of-array-except-self                                      |
-| 498. 对角线遍历                   | 1    | https://leetcode-cn.com/problems/diagonal-traverse                                                 |
-| 344. 反转字符串                   | 1    | https://leetcode-cn.com/problems/reverse-string                                                    |
-| 543. 二叉树的直径                  | 1    | https://leetcode-cn.com/problems/diameter-of-binary-tree                                           |
-| 8. 字符串转换整数 (atoi)            | 1    | https://leetcode-cn.com/problems/string-to-integer-atoi                                            |
-| 240. 搜索二维矩阵 II               | 1    | https://leetcode-cn.com/problems/search-a-2d-matrix-ii                                             |
-| 200. 岛屿数量                    | 1    | https://leetcode-cn.com/problems/number-of-islands                                                 |
-| 64. 最小路径和                    | 1    | https://leetcode-cn.com/problems/minimum-path-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                          |
-| 268. 缺失数字                    | 1    | https://leetcode-cn.com/problems/missing-number                                                    |
-| 349. 两个数组的交集                 | 1    | https://leetcode-cn.com/problems/intersection-of-two-arrays                                        |
-| 43. 字符串相乘                    | 1    | https://leetcode-cn.com/problems/multiply-strings                                                  |
-| 208. 实现 Trie (前缀树)           | 1    | https://leetcode-cn.com/problems/implement-trie-prefix-tree                                        |
-| 35. 搜索插入位置                   | 1    | https://leetcode-cn.com/problems/search-insert-position                                            |
-| 919. 完全二叉树插入器                | 1    | https://leetcode-cn.com/problems/complete-binary-tree-inserter                                     |
-| 补充题6. 手撕堆排序                  | 1    | https://leetcode-cn.com/problems/undefined                                                         |
-| 1493. 删掉一个元素以后全为 1 的最长子数组    | 1    | https://leetcode-cn.com/problems/undefined                                                         |
-| 104. 二叉树的最大深度                | 1    | https://leetcode-cn.com/problems/maximum-depth-of-binary-tree                                      |
-| 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                             |
-| 191. 位1的个数                   | 1    | https://leetcode-cn.com/problems/number-of-1-bits                                                  |
-| 318. 最大单词长度乘积                | 1    | https://leetcode-cn.com/problems/maximum-product-of-word-lengths                                   |
-| 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                         |
-| 312. 戳气球                     | 1    | https://leetcode-cn.com/problems/burst-balloons                                                    |
-| 958. 二叉树的完全性检验               | 1    | https://leetcode-cn.com/problems/check-completeness-of-a-binary-tree                               |
-| 59. 螺旋矩阵 II                  | 1    | https://leetcode-cn.com/problems/spiral-matrix-ii                                                  |
-| 39. 组合总和                     | 1    | https://leetcode-cn.com/problems/combination-sum                                                   |
-| 224. 基本计算器                   | 1    | https://leetcode-cn.com/problems/basic-calculator                                                  |
-| 67. 二进制求和                    | 1    | https://leetcode-cn.com/problems/add-binary                                                        |
-| 101. 对称二叉树                   | 1    | https://leetcode-cn.com/problems/symmetric-tree                                                    |
-| 141. 环形链表                    | 1    | https://leetcode-cn.com/problems/linked-list-cycle                                                 |
-| 6. Z 字形变换                    | 1    | https://leetcode-cn.com/problems/zigzag-conversion                                                 |
-| 470. 用 Rand7() 实现 Rand10()   | 1    | https://leetcode-cn.com/problems/implement-rand10-using-rand7                                      |
diff --git a/kuaishou/test.md b/kuaishou/test.md
index efeeae6..c082d6c 100644
--- a/kuaishou/test.md
+++ b/kuaishou/test.md
@@ -1,20 +1,22 @@
-测试
+# 测试
+
 |题目|出现次数|链接|
 |-|-|-|
 |3. 无重复字符的最长子串|3|https://leetcode-cn.com/problems/longest-substring-without-repeating-characters|
 |142. 环形链表 II|2|https://leetcode-cn.com/problems/linked-list-cycle-ii|
 |20. 有效的括号|2|https://leetcode-cn.com/problems/valid-parentheses|
-|143. 重排链表|1|https://leetcode-cn.com/problems/reorder-list|
-|349. 两个数组的交集|1|https://leetcode-cn.com/problems/intersection-of-two-arrays|
-|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|
-|5. 最长回文子串|1|https://leetcode-cn.com/problems/longest-palindromic-substring|
-|39. 组合总和|1|https://leetcode-cn.com/problems/combination-sum|
-|647. 回文子串|1|https://leetcode-cn.com/problems/palindromic-substrings|
-|344. 反转字符串|1|https://leetcode-cn.com/problems/reverse-string|
 |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|
 |15. 三数之和|1|https://leetcode-cn.com/problems/3sum|
 |补充题6. 手撕堆排序|1||
 |509. 斐波那契数|1|https://leetcode-cn.com/problems/fibonacci-number|
 |206. 反转链表|1|https://leetcode-cn.com/problems/reverse-linked-list|
-|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|
\ No newline at end of file
+|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|
+|143. 重排链表|1|https://leetcode-cn.com/problems/reorder-list|
+|349. 两个数组的交集|1|https://leetcode-cn.com/problems/intersection-of-two-arrays|
+|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|
+|121. 买卖股票的最佳时机|1|https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock|
+|5. 最长回文子串|1|https://leetcode-cn.com/problems/longest-palindromic-substring|
+|39. 组合总和|1|https://leetcode-cn.com/problems/combination-sum|
+|647. 回文子串|1|https://leetcode-cn.com/problems/palindromic-substrings|
+|344. 反转字符串|1|https://leetcode-cn.com/problems/reverse-string|
\ No newline at end of file