Update outside readme.

Author: Bruce Yang

91algo/README.md

@@ -8,3 +8,237 @@
 老师使用的语言主要是 Python/JavaScript...
 
 本人暂定使用 C++ 来完成。
+
+## LeetCode 题解
+
+| 基础篇                      | 进阶篇                    | 专题篇                                  |
+| --------------------------- | ------------------------- | --------------------------------------- |
+| [数组/栈/队列](#数组栈队列) | [高频面试题](#高频面试题) | [二分法](#二分法)                       |
+| [链表](#链表)               | [前缀树](#前缀树)         | [滑动窗口](#滑动窗口)                   |
+| [树](#树)                   | [并查集](#并查集)         | [位运算](#位运算)                       |
+| [哈希表](#哈希表)           | [跳表](#跳表)             | [搜索(BFS/DFS/回溯)](#搜索bfs-dfs-回溯) |
+| [双指针](#双指针)           | [剪枝](#剪枝)             | [背包问题](#背包问题)                   |
+| -                           | [字符串匹配](#字符串匹配) | [动态规划](#动态规划)                   |
+| -                           | [堆](#堆)                 | [分治](#分治)                           |
+| -                           | -                         | [贪心](#贪心)                           |
+
+## 基础篇
+
+### 数组，栈，队列
+
+#### 每日一题
+
+-   [x] [【day-01】989.数组形式的整数加法](./daily/posts/day1.md)
+-   [x] [【day-02】821.字符的最短距离](./daily/posts/day2.md)
+
+
+#### 数组拓展题目
+
+-   [x] [75.颜色分类](./daily/posts/basic/array-stack-queue/ext-sort-colors.md)
+
+
+#### 栈拓展题目
+
+-   [ ] [946. 验证栈序列](https://leetcode-cn.com/problems/validate-stack-sequences/)
+
+#### 队列拓展题目
+
+-   [ ] [155.最小栈](https://leetcode-cn.com/problems/min-stack/)
+
+
+#### 相关专题
+
+-   [ ] [前缀和](https://lucifer.ren/blog/2020/09/27/atMostK/)
+
+### 链表
+
+#### 每日一题
+
+-   [x] [【day-07】24.两两交换链表中的节点](./daily/posts/basic/linked-list/07.swap-nodes-in-pairs.md)
+
+
+#### 链表拓展题目
+
+-   [x] [2.两数相加](./daily/posts/problems/2.add-two-numbers.md)
+
+### 树
+
+#### 每日一题
+
+-   [x] [【day-13】104.二叉树的最大深度](./daily/posts/basic/binary-tree/13.maximum-depth-of-binary-tree.md)
+
+#### 树拓展题目
+
+-   [x] [105.从前序与中序遍历序列构造二叉树](./daily/posts/basic/binary-tree/
+
+### 哈希表
+
+#### 每日一题
+
+-   [x] [【day-19】1.两数之和](./daily/posts/basic/hashmap/19.two-sum.md)
+
+
+#### 哈希表拓展题目
+
+-   [x] [645.错误的集合](./daily/posts/basic/hashmap/ext-set-mismatch.md)
+
+
+### 双指针
+
+#### 每日一题
+
+-   [x] [【day-25】35.搜索插入位置](./daily/posts/basic/two-pointers/25.search-insert-position.md)
+
+
+#### 双指针拓展题目
+
+-   [x] [875.爱吃香蕉的珂珂](./daily/posts/basic/two-pointers/ext-koko-eating-bananas.md)
+
+## 进阶篇
+
+### 高频面试题
+
+**二叉树遍历系列**
+
+-   [x] [【day-34】二叉树遍历系列](./daily/posts/medium/hot/34.traversal-of-binary-tree.md)
+
+**反转链表系列**
+
+-   [x] [【day-35】206.反转链表](./daily/posts/medium/hot/35.reverse-linked-list.md)
+
+**位运算系列**
+
+-   [ ] [【day-36】78.子集](./daily/posts/medium/hot/36.subsets.md)
+
+**动态规划系列**
+
+-   [x] [【day-37】62.不同路径](./daily/posts/medium/hot/37.unique-paths.md)
+
+
+**有效括号系列**
+
+-   [x] [【day-38】20.有效括号](./daily/posts/medium/hot/38.valid-parentheses.md)
+
+
+**设计系列**
+
+-   [ ] [【day-39】剑指 Offer09.用两个栈实现队列](./daily/posts/)
+
+
+**前缀和系列**
+
+-   [x] [【day-40】网易面试题](./daily/posts/medium/hot/40.netease.md)
+
+
+### 前缀树
+
+-   [x] [【day-41】208.实现 Trie](./daily/posts/medium/trie/41.implement-trie-prefix-tree.md)
+
+### 并查集
+
+#### 每日一题
+
+-   [x] [【day-44】547.朋友圈](./daily/posts/medium/union-find/44.friend-circles.md)
+
+
+#### 拓展
+
+-   [x] [1202.交换字符串中的元素](./daily/posts/medium/union-find/ext-smallest-string-with-swaps.md)
+
+### 跳表
+
+-   [ ] [【day-47】1206.设计跳表](./daily/posts/)
+
+### 剪枝
+
+#### 每日一题
+
+-   [x] [【day-48】814.二叉树剪枝](./daily/posts/medium/prune/48.binary-tree-pruning.md)
+
+
+### 字符串匹配
+
+#### 每日一题
+
+-   [ ] [【day-52】28.实现 strStr()](./daily/posts/medium/rk-kpm/52.implement-strstr.md)
+
+#### 拓展题目
+
+-   [ ] [1371.每个元音包含偶数次的最长子字符串](./daily/posts/medium/day-52.md)
+
+
+### 堆
+
+#### 每日一题
+
+-   [x] [【day-54】215.数组中的第 K 个最大元素](./daily/posts/medium/heap/54.kth-largest-element-in-an-array.md)
+
+
+## 专题篇
+
+### 二分法
+
+#### 每日一题
+
+-   [x] [【day-61】69.x 的平方根](./daily/posts/topics/binary-search/61.sqrtx.md)
+
+
+#### 拓展题目
+
+-   [x] [33.搜索旋转排序数组](./daily/posts/topics/binary-search/ext-search-in-rotated-sorted-array.md)
+
+### 滑动窗口
+
+#### 每日一题
+
+-   [x] [【day-67】1456.定长子串中元音的最大数目](./daily/posts/topics/sliding-window/67.maximum-number-of-vowels-in-a-substring-of-given-length.md)
+
+#### 拓展题目
+
+-   [x] [581.最短无序连续子数组](./daily/posts/topics/sliding-window/ext-shortest-unsorted-continuous-subarray.md)
+
+### 位运算
+
+-   [ ] [【day-72】268.缺失数字](./daily/posts/topics/day-72.md)
+
+
+### 搜索(BFS, DFS, 回溯)
+
+-   [x] [【day-74】1254.统计封闭岛屿的数目](./daily/posts/topics/day-74.md)
+
+
+-   [x] [5210.球会落何处](./daily/posts/topics/searching/ext-where-will-the-ball-fall.md)
+
+### 背包问题
+
+-   [x] [【day-80】322.零钱兑换](./daily/posts/topics/day-80.md)
+
+
+### 动态规划
+
+-   [ ] [【day-84】爬楼梯变种](./daily/posts/topics/day-84.md)
+
+
+### 分治
+
+-   [x] [【day-88】96.不同的二叉搜索树](./daily/posts/topics/day-88.md)
+
+
+### 贪心
+
+#### 每日一题
+
+-   [ ] [【day-90】765.情侣牵手](./daily/posts/topics/day-90.md)
+
+#### 贪心拓展题目
+
+-   [x] [135.分发糖果](./daily/posts/topics/greedy/ext-candy.md)
+
+
+## 其他
+
+-   [x] [77.组合](./daily/posts/extensions/77.combination.md)
+
+
+> [在线电子书](https://geekplayers.com/leetcode)
+