Challenge: Print Post-order Traversal
Let’s print the post-order traversal of a tree.
We'll cover the following
Problem
Given a binary tree, perform a post-order traversal by completing the PrintPostOrder() function. A post-order traversal is a traversal in which a node is visited at the very end. The left child of a node is explored first, then the right child, and then the node itself.
Input
A binary tree.
Output
Display post-order traversal of the tree on the console.
Sample input
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