# 路径总和（Path Sum）及其Java实现
## 引言
路径总和是二叉树问题中常见的一种，它要求我们判断是否存在一条从根节点到叶子节点的路径上，所有节点值的和等于给定的目标值。在本文中，我们将介绍路径总和的概念，并给出它的Java实现。
## 路径总和的概念
路径总和问题可以抽象为在二叉树中查找一条从根节点到叶子节点的路径，使得路径上所有节点值的和等于给定的目标值。具体来说，我们需要
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2023-08-09 20:28:19
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/** * Definition for a binary tree node. * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) : val(x), left(NULL), r
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2017-06-17 15:49:00
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Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum.Fo...
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2014-11-13 21:36:00
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Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum. N
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2018-11-21 22:09:00
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Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum. F
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2017-07-19 13:28:00
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bool hasPathSum(TreeNode *root, int sum) { if (root == nullptr)return false; if (root->left == nullptr && root->right == nullptr) return sum == root->
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2022-01-17 17:46:47
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看了一下数据结构中树的操作，A这题感觉好一点了。Symmetric Tree和这个很相似来着，可以借鉴一下这个思路。用递归处理Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that ...
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2021-08-07 11:46:28
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题目描写叙述： Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the give
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2016-04-20 14:57:00
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Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum.Fo...
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2014-07-01 19:41:00
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Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum.Fo...
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2015-04-10 10:48:00
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LeetCode解题之Path Sum 原题 推断一棵二叉树是否有一条从根节点到某一叶子节点的路径，该路径上全部节点的和为一个特定值。 注意点： 无 样例: 输入: sum = 12 3 / \ 9 20 / \ 15 7 / 14 输出: True (3->9) 解题思路 直接通过递归来解决，推断
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2017-07-30 17:03:00
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Given a binary tree and a sum, find all root-to-leaf paths where each path's sum equals the given sum.For example:Given the below binary tree andsum =...
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2014-11-16 09:43:00
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Given amxngrid filled with non-negative numbers, find a path from top left to bottom right whichminimizesthe sum of all numbers along its path.Note:Yo...
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2013-10-03 03:16:00
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题目链接：Path Sum题目：Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the um.For example:Given the
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2023-07-26 16:48:53
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Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right which minimizes the sum of all numbers along its path.Note: You can only move either down or right at any
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2013-12-07 00:09:36
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Question Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum.For example: Given the below binary tree a
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2023-02-02 14:56:14
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Path Sum IIGiven a binary tree and a sum, find all root-to-leaf paths where each path's sum equals the given sum.For example:Given the below binary tr...
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2021-08-07 11:30:56
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Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum.Fo...
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2014-05-05 12:02:00
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Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum.Fo...
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2014-07-03 09:47:00
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/** * Definition for binary tree * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) : val(x), left(NULL), right(NUL
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2016-02-04 16:16:00
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