public class Solution
extends Object
515 - Find Largest Value in Each Tree Row\.
Medium
Given the `root` of a binary tree, return _an array of the largest value in each row_ of the tree **(0-indexed)**.
**Example 1:**
**Input:** root = [1,3,2,5,3,null,9]
**Output:** [1,3,9]
**Example 2:**
**Input:** root = [1,2,3]
**Output:** [1,3]
**Constraints:**
* The number of nodes in the tree will be in the range [0, 104].
* -231 <= Node.val <= 231 - 1