g1101_1200.s1161_maximum_level_sum_of_a_binary_tree.Solution

public class Solution extends Object

1161 - Maximum Level Sum of a Binary Tree.

Medium

Given the root of a binary tree, the level of its root is 1, the level of its children is 2, and so on.

Return the smallest level x such that the sum of all the values of nodes at level x is maximal.

Example 1:

Input: root = [1,7,0,7,-8,null,null]

Output: 2

Explanation:

Level 1 sum = 1.

Level 2 sum = 7 + 0 = 7.

Level 3 sum = 7 + -8 = -1.

So we return the level with the maximum sum which is level 2.

Example 2:

Input: root = [989,null,10250,98693,-89388,null,null,null,-32127]

Output: 2

Constraints:

Class Solution

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