How to Solve Path Sum I I Problem
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Path Sum II
Given the root of a binary tree and an integer targetSum, return all root-to-leaf paths where the sum of the node values in the path equals targetSum. Each path should be returned as a list of the nod...
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Understanding the Path Sum I I Problem
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Problem Statement
Given the root of a binary tree and an integer targetSum, return all root-to-leaf paths where the sum of the node values in the path equals targetSum. Each path should be returned as a list of the node values, not node references. A root-to-leaf path is a path starting from the root and ending at any leaf node. A leaf is a node with no children.
Path Sum II
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Examples
root = [5,4,8,11,null,13,4,7,2,null,null,5,1], targetSum = 22[[5,4,11,2],[5,8,4,5]]There are two paths whose sum equals targetSum: 5 + 4 + 11 + 2 = 22 5 + 8 + 4 + 5 = 22
root = [1,2,3], targetSum = 5[]root = [1,2], targetSum = 0[]Constraints
The number of nodes in the tree is in the range [0, 5000].1000 <= Node.val <= 10001000 <= targetSum <= 1000How Interview Coder Helps with Leetcode Problems
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