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

解題

和 2235. 一樣，有點濫竽充數的一題

Runtime: 0 ms, faster than 100.00%

Memory Usage: 2 MB, less than 95.31%

/**
 * Definition for a binary tree node.
 * type TreeNode struct {
 *     Val int
 *     Left *TreeNode
 *     Right *TreeNode
 * }
 */
func checkTree(root *TreeNode) bool {
    return root.Val == root.Left.Val + root.Right.Val
}