Package g0101_0200.s0112_path_sum

Class Solution

java.lang.Object

g0101_0200.s0112_path_sum.Solution

public class Solution
extends Object

112 - Path Sum.<p>Easy</p> <p>Given the <code>root</code> of a binary tree and an integer <code>targetSum</code>, return <code>true</code> if the tree has a <strong>root-to-leaf</strong> path such that adding up all the values along the path equals <code>targetSum</code>.</p> <p>A <strong>leaf</strong> is a node with no children.</p> <p><strong>Example 1:</strong></p> <p><img src="https://assets.leetcode.com/uploads/2021/01/18/pathsum1.jpg" alt="" /></p> <p><strong>Input:</strong> root = [5,4,8,11,null,13,4,7,2,null,null,null,1], targetSum = 22</p> <p><strong>Output:</strong> true</p> <p><strong>Example 2:</strong></p> <p><img src="https://assets.leetcode.com/uploads/2021/01/18/pathsum2.jpg" alt="" /></p> <p><strong>Input:</strong> root = [1,2,3], targetSum = 5</p> <p><strong>Output:</strong> false</p> <p><strong>Example 3:</strong></p> <p><strong>Input:</strong> root = [1,2], targetSum = 0</p> <p><strong>Output:</strong> false</p> <p><strong>Constraints:</strong></p> <ul> <li>The number of nodes in the tree is in the range <code>[0, 5000]</code>.</li> <li><code>-1000 <= Node.val <= 1000</code></li> <li><code>-1000 <= targetSum <= 1000</code></li> </ul>

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
boolean	hasPathSum(TreeNode root, int sum)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Solution

public Solution()

Method Details

hasPathSum

public boolean hasPathSum(TreeNode root,
 int sum)