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

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94.二叉树的中序遍历

1. 题目描述

给定一个二叉树的根节点 root ,返回 它的 中序 遍历

示例 1:


输入:root = [1,null,2,3]
输出:[1,3,2]

示例 2:


输入:root = []
输出:[]

示例 3:


输入:root = [1]
输出:[1]

提示:

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

进阶: 递归算法很简单,你可以通过迭代算法完成吗?

标签 深度优先搜索 二叉树

2. 解题

Documentation

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