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@ -38,6 +38,7 @@
* [哈希表：map等候多时了](https://mp.weixin.qq.com/s/uVAtjOHSeqymV8FeQbliJQ)
* [哈希表：其实需要哈希的地方都能找到map的身影](https://mp.weixin.qq.com/s/Ue8pKKU5hw_m-jPgwlHcbA)
* [哈希表：这道题目我做过？](https://mp.weixin.qq.com/s/sYZIR4dFBrw_lr3eJJnteQ)
* [哈希表：解决了两数之和，那么能解决三数之和么？](https://mp.weixin.qq.com/s/r5cgZFu0tv4grBAexdcd8A)
* 精选链表相关的面试题
* 精选字符串相关的面试题
* 精选栈与队列相关的面试题
@ -354,11 +355,13 @@ int countNodes(TreeNode* root) {
|[0027.移除元素](https://github.com/youngyangyang04/leetcode/blob/master/problems/0027.移除元素.md) |数组 |简单| **暴力** **双指针/快慢指针/双指针**|
|[0028.实现strStr()](https://github.com/youngyangyang04/leetcode/blob/master/problems/0028.实现strStr().md) |字符串 |简单| **KMP** |
|[0035.搜索插入位置](https://github.com/youngyangyang04/leetcode/blob/master/problems/0035.搜索插入位置.md) |数组 |简单| **暴力** **二分**|
|[0037.解数独](https://github.com/youngyangyang04/leetcode/blob/master/problems/0037.解数独.md) |回溯 |困难| **回溯**|
|[0039.组合总和](https://github.com/youngyangyang04/leetcode/blob/master/problems/0039.组合总和.md) |数组/回溯 |中等| **回溯**|
|[0040.组合总和II](https://github.com/youngyangyang04/leetcode/blob/master/problems/0040.组合总和II.md) |数组/回溯 |中等| **回溯**|
|[0046.全排列](https://github.com/youngyangyang04/leetcode/blob/master/problems/0046.全排列.md) |回溯|中等| **回溯**|
|[0047.全排列II](https://github.com/youngyangyang04/leetcode/blob/master/problems/0047.全排列II.md) |回溯|中等| **回溯**|
|[0051.N皇后](https://github.com/youngyangyang04/leetcode/blob/master/problems/0051.N皇后.md) |回溯|中等| **回溯**|
|[0051.N皇后](https://github.com/youngyangyang04/leetcode/blob/master/problems/0051.N皇后.md) |回溯|困难| **回溯**|
|[0052.N皇后II](https://github.com/youngyangyang04/leetcode/blob/master/problems/0052.N皇后II.md) |回溯|困难| **回溯**|
|[0053.最大子序和](https://github.com/youngyangyang04/leetcode/blob/master/problems/0053.最大子序和.md) |数组 |简单|**暴力** **贪心** 动态规划 分治|
|[0059.螺旋矩阵II](https://github.com/youngyangyang04/leetcode/blob/master/problems/0059.螺旋矩阵II.md) |数组 |中等|**模拟**|
|[0077.组合](https://github.com/youngyangyang04/leetcode/blob/master/problems/0077.组合.md) |回溯 |中等|**回溯**|
@ -400,10 +403,11 @@ int countNodes(TreeNode* root) {
|[0349.两个数组的交集](https://github.com/youngyangyang04/leetcode/blob/master/problems/0349.两个数组的交集.md) |哈希表 |简单|**哈希**|
|[0350.两个数组的交集II](https://github.com/youngyangyang04/leetcode/blob/master/problems/0350.两个数组的交集II.md) |哈希表 |简单|**哈希**|
|[0383.赎金信](https://github.com/youngyangyang04/leetcode/blob/master/problems/0383.赎金信.md) |数组 |简单|**暴力** **字典计数** **哈希**|
|[0450.删除二叉搜索树中的节点](https://github.com/youngyangyang04/leetcode/blob/master/problems/0450.删除二叉搜索树中的节点.md) |树 |中等|**递归**|
|[0434.字符串中的单词数](https://github.com/youngyangyang04/leetcode/blob/master/problems/0434.字符串中的单词数.md) |字符串 |简单|**模拟**|
|[0450.删除二叉搜索树中的节点](https://github.com/youngyangyang04/leetcode/blob/master/problems/0450.删除二叉搜索树中的节点.md) |树 |中等|**递归**|
|[0454.四数相加II](https://github.com/youngyangyang04/leetcode/blob/master/problems/0454.四数相加II.md) |哈希表 |中等| **哈希**|
|[0459.重复的子字符串](https://github.com/youngyangyang04/leetcode/blob/master/problems/0459.重复的子字符串.md) |字符创 |简单| **KMP**|
|[0491.递增子序列](https://github.com/youngyangyang04/leetcode/blob/master/problems/0491.递增子序列.md) |深度优先搜索 |中等|**深度优先搜索/回溯**|
|[0541.反转字符串II](https://github.com/youngyangyang04/leetcode/blob/master/problems/0541.反转字符串II.md) |字符串 |简单| **模拟**|
|[0575.分糖果](https://github.com/youngyangyang04/leetcode/blob/master/problems/0575.分糖果.md) |哈希表 |简单|**哈希**|
|[0617.合并二叉树](https://github.com/youngyangyang04/leetcode/blob/master/problems/0617.合并二叉树.md) |树 |简单|**递归** **迭代**|