lc226

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Published: Aug 9, 2023 License: GPL-3.0 Imports: 1 Imported by: 0

README

226.翻转二叉树

1. 题目描述

给你一棵二叉树的根节点 root ,翻转这棵二叉树,并返回其根节点。

示例 1:


输入:root = [4,2,7,1,3,6,9]
输出:[4,7,2,9,6,3,1]

示例 2:


输入:root = [2,1,3]
输出:[2,3,1]

示例 3:


输入:root = []
输出:[]

提示:

  • 树中节点数目范围在 [0, 100]
  • -100 <= Node.val <= 100

标签 深度优先搜索 广度优先搜索 二叉树

2. 解题

递归

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