Day 7 of 31-Day May LeetCode Challenge
In a binary tree, the root node is at depth
0, and children of each depth
k node are at depth
Two nodes of a binary tree are cousins if they have the same depth, but have different parents.
We are given the
root of a binary tree with unique values, and the values
y of two different nodes in the tree.
true if and only if the nodes corresponding to the values
y are cousins.