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

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113.路径总和 II

1. 题目描述

给你二叉树的根节点 root 和一个整数目标和 targetSum ,找出所有 从根节点到叶子节点 路径总和等于给定目标和的路径。

叶子节点 是指没有子节点的节点。  

示例 1:


输入:root = [5,4,8,11,null,13,4,7,2,null,null,5,1], targetSum = 22
输出:[[5,4,11,2],[5,8,4,5]]

示例 2:


输入:root = [1,2,3], targetSum = 5
输出:[]

示例 3:


输入:root = [1,2], targetSum = 0
输出:[]

 

提示:

  • 树中节点总数在范围 [0, 5000]
  • -1000 <= Node.val <= 1000
  • -1000 <= targetSum <= 1000

标签 深度优先搜索 回溯 二叉树

2. 解题

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