/** * Definition for a binary tree node. */ Practice 1 public class TreeNode { int val; TreeNode left; TreeNode right; TreeNode(int x) { val = x; } } 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. Note: A leaf is a node with no children. Example: Given the below binary tree and sum = 22, class TreeDFS { public boolean hasPathSum(TreeNode root, int sum) { 5 4 8 } 11 13 4 /\ \ 7 2 1 return true, as there exist a root-to-leaf path 5->4->11->2 which sum is 22.
/** * Definition for a binary tree node. */ Practice 1 public class TreeNode { int val; TreeNode left; TreeNode right; TreeNode(int x) { val = x; } } 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. Note: A leaf is a node with no children. Example: Given the below binary tree and sum = 22, class TreeDFS { public boolean hasPathSum(TreeNode root, int sum) { 5 4 8 } 11 13 4 /\ \ 7 2 1 return true, as there exist a root-to-leaf path 5->4->11->2 which sum is 22.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Please answer the question in the screenshot. The language used here is Java. Please use the starting code.

Transcribed Image Text:/ **
* Definition for a binary tree node.
* /
public class TreeNode {
int val;
Practice 1
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.
Note: A leaf is a node with no children.
TreeNode left;
TreeNode right;
TreeNode (int x) { val = x; }
}
Example: Given the below binary tree
and sum = 22,
class TreeDFS {
%3D
5
public boolean hasPathSum(TreeNode root, int sum) {
}
}
4 8
11 13 4
7 2
1
return true, as there exist a
root-to-leaf path 5->4->11->2 which
sum is 22.
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