How to Check if a Binary Tree Is Symmetric (Mirror Image of Itself)?
A binary tree is a data structure tree that consists of connected nodes, each node has at most two children that are linked exactly with one edge. In this tutorial, we’ll show how to check if a binary tree is symmetric. We will write a function that returns true if the tree is mirror of itself, else false. For example, the following binary tree is symmetric, our function should return true in this case: The following binary tree is not symmetric, although the two subtrees have the same tree structure: We are going to write a recursive functi…