648-单词替换(Replace Words) 原文链接: https://leetcode-cn.com/problems/replace-words 英文原文In English, we have a concept called root, which can be follo 2021-12-03 哈希表字典树字符串数组 中等
650-只有两个键的键盘(2 Keys Keyboard) 原文链接: https://leetcode-cn.com/problems/2-keys-keyboard 英文原文There is only one character 'A' on the screen of a 2021-12-03 动态规划数学 中等
652-寻找重复的子树(Find Duplicate Subtrees) 原文链接: https://leetcode-cn.com/problems/find-duplicate-subtrees 英文原文Given the root of a binary tree, return all du 2021-12-03 二叉树广度优先搜索树深度优先搜索 中等
653-两数之和 IV - 输入 BST(Two Sum IV - Input is a BST) 原文链接: https://leetcode-cn.com/problems/two-sum-iv-input-is-a-bst 英文原文Given the root of a Binary Search Tree and a targ 2021-12-03 二叉搜索树二叉树双指针哈希表广度优先搜索树深度优先搜索 简单
654-最大二叉树(Maximum Binary Tree) 原文链接: https://leetcode-cn.com/problems/maximum-binary-tree 英文原文You are given an integer array nums with no duplicates. 2021-12-03 二叉树分治单调栈数组栈树 中等
655-输出二叉树(Print Binary Tree) 原文链接: https://leetcode-cn.com/problems/print-binary-tree 英文原文Given the root of a binary tree, construct a 0-indexed m 2021-12-03 二叉树广度优先搜索树深度优先搜索 中等
658-找到 K 个最接近的元素(Find K Closest Elements) 原文链接: https://leetcode-cn.com/problems/find-k-closest-elements 英文原文Given a sorted integer array arr, two integers k an 2021-12-03 二分查找双指针堆(优先队列)排序数组 中等
657-机器人能否返回原点(Robot Return to Origin) 原文链接: https://leetcode-cn.com/problems/robot-return-to-origin 英文原文There is a robot starting at the position (0, 0), th 2021-12-03 字符串模拟 简单
659-分割数组为连续子序列(Split Array into Consecutive Subsequences) 原文链接: https://leetcode-cn.com/problems/split-array-into-consecutive-subsequences 英文原文You are given an integer array nu 2021-12-03 哈希表堆(优先队列)数组贪心 中等
662-二叉树最大宽度(Maximum Width of Binary Tree) 原文链接: https://leetcode-cn.com/problems/maximum-width-of-binary-tree 英文原文Given the root of a binary tree, return the ma 2021-12-03 二叉树广度优先搜索树深度优先搜索 中等