Given the root of a binary tree, find the maximum value V for which there exists different nodes A and B where V = |A.val - B.val| and A is an ancestor of B. (A node A is an ancestor of B if either: any child of A is equal to B, or any child of A is…

public class Solution { Stack<int> S = new Stack<int>(); ; public void Trace(TreeNode root) { if (root != null) { S.Push(root.val); if (root.left != null) { Trace(root.left); } if (root.right != null) { Trace(root.right); } if (root.left == nu…