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[TOC] <br/> > ### 数组 [岛屿的最大面积](https://leetcode-cn.com/problems/max-area-of-island/) [求众数](https://leetcode-cn.com/problems/majority-element/) [搜索二维矩阵 II](https://leetcode-cn.com/problems/search-a-2d-matrix-ii/) [合并两个有序数组](https://leetcode-cn.com/problems/merge-sorted-array/) [最大数](https://leetcode-cn.com/problems/largest-number/) [最长连续序列](https://leetcode-cn.com/problems/longest-consecutive-sequence/) <br/> > ### 字符串 [<font color="#76EE00">最长回文子串</font>](https://leetcode-cn.com/problems/longest-palindromic-substring/) [无重复字符的最长子串](https://leetcode-cn.com/problems/longest-substring-without-repeating-characters/) [字符串相乘](https://leetcode-cn.com/problems/multiply-strings/) [字符串相加](https://leetcode-cn.com/problems/add-strings/) [回文子串](https://leetcode-cn.com/problems/palindromic-substrings/) [字母异位词分组](https://leetcode-cn.com/problems/group-anagrams/) <br/> > ### 位运算 [只出现一次的数](https://leetcode-cn.com/problems/minimum-path-sum/submissions/) [子集](https://leetcode-cn.com/problems/subsets/) [2的幂](https://leetcode-cn.com/problems/power-of-two/) [找不同](https://leetcode-cn.com/problems/find-the-difference/) <br/> > ### 排序算法 [排序链表](https://leetcode-cn.com/problems/sort-list/) [两个数组的交集](https://leetcode-cn.com/problems/intersection-of-two-arrays/) [数组中的第K个最大元素](https://leetcode-cn.com/problems/kth-largest-element-in-an-array/) <br/> > ### 链表 [两数相加](https://leetcode-cn.com/problems/add-two-numbers/) [合并两个有序链表](https://leetcode-cn.com/problems/merge-two-sorted-lists/) [反转链表](https://leetcode-cn.com/problems/reverse-linked-list/) [环形链表](https://leetcode-cn.com/problems/linked-list-cycle/) [回文链表](https://leetcode-cn.com/problems/palindrome-linked-list/) <br/> > ### 栈和队列 [有效的括号](https://leetcode-cn.com/problems/valid-parentheses/) [ 使括号有效的最少添加](https://leetcode-cn.com/problems/minimum-add-to-make-parentheses-valid/) [二叉树的前序遍历](https://leetcode-cn.com/problems/binary-tree-preorder-traversal/) [二叉树的中序遍历](https://leetcode-cn.com/problems/binary-tree-inorder-traversal/) [二叉树的锯齿形层次遍历](https://leetcode-cn.com/problems/binary-tree-zigzag-level-order-traversal/) [柱状图中最大的矩形](https://leetcode-cn.com/problems/largest-rectangle-in-histogram/) <br/> > ### 树和图 [二叉树的最大深度](https://leetcode-cn.com/problems/maximum-depth-of-binary-tree/) [<font color="#76EE00">二叉树的层次遍历</font>](https://leetcode-cn.com/problems/binary-tree-level-order-traversal/) [将有序数组转换为二叉搜索树](https://leetcode-cn.com/problems/convert-sorted-array-to-binary-search-tree/) [先序遍历](https://leetcode-cn.com/problems/binary-tree-preorder-traversal/) [路径总和](https://leetcode-cn.com/problems/path-sum/) [对称二叉树](https://leetcode-cn.com/problems/symmetric-tree/) [<font color="#76EE00">岛屿的个数</font>](https://leetcode-cn.com/problems/number-of-islands/) [二叉树最大宽度](https://leetcode-cn.com/problems/maximum-width-of-binary-tree/) [<font color="#76EE00">相同的树</font>](https://leetcode-cn.com/problems/same-tree/) <br/> > ### 动态规划 [<font color="#76EE00">爬楼梯</font>](https://leetcode-cn.com/problems/climbing-stairs/submissions/) [打家劫舍](https://leetcode-cn.com/problems/house-robber/) [使用最小花费爬楼梯](https://leetcode-cn.com/problems/min-cost-climbing-stairs/) [<font color="#76EE00">不同路径</font>](https://leetcode-cn.com/problems/unique-paths/) [三角形最小路径和](https://leetcode-cn.com/problems/triangle/) [最小路径和](https://leetcode-cn.com/problems/minimum-path-sum/submissions/) [<font color="red">交错字符串</font>](https://leetcode-cn.com/problems/interleaving-string/) [最大正方形](https://leetcode-cn.com/problems/maximal-square/) <br/> > ### 01背包 [<font color="red">分割等和子集</font>](https://leetcode-cn.com/problems/partition-equal-subset-sum/) [<font color="red">零钱兑换</font>](https://leetcode-cn.com/problems/coin-change/)