public class Solution
extends Object
2236 - Root Equals Sum of Children\.
Easy
You are given the `root` of a **binary tree** that consists of exactly `3` nodes: the root, its left child, and its right child.
Return `true` _if the value of the root is equal to the **sum** of the values of its two children, or_ `false` _otherwise_.
**Example 1:**
**Input:** root = [10,4,6]
**Output:** true
**Explanation:** The values of the root, its left child, and its right child are 10, 4, and 6, respectively.
10 is equal to 4 + 6, so we return true.
**Example 2:**
**Input:** root = [5,3,1]
**Output:** false
**Explanation:** The values of the root, its left child, and its right child are 5, 3, and 1, respectively.
5 is not equal to 3 + 1, so we return false.
**Constraints:**
* The tree consists only of the root, its left child, and its right child.
* `-100 <= Node.val <= 100`