Flip Equivalent Binary Trees

Description

Let’s start by defining what a flip operation for a binary tree is. We can define it as:

“Choosing any node and swapping the right and left child subtrees.”

A binary tree, T, is flip equivalent to another binary tree, S, if we can make T equal to S after some number of flip operations.

Given the roots of two binary trees, root1 and root2, you have to find out whether the trees are flip equivalent to each other or not. The flipEquiv function should return true if the binary trees are equivalent. Otherwise, it will return false.

Example

Let’s look at the example below: