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Post-Order Traversal

Explore post-order traversal in binary trees, where nodes are visited in left-right-root order. Understand the algorithm and see how to implement it in Python. This lesson helps you master post-order traversal, enhancing your grasp of tree structures and traversal techniques useful for coding interviews.

Introduction #

In post-order traversal, the elements are traversed in “left-right-root” order. We first visit the left child, then the right child, and then finally the root/parent node. Here is a high-level description of the post-order traversal algorithm,

  1. Traverse the left sub-tree of the ‘currentNode’ recursively by calling the postOrderPrint() function on it.

  2. Traverse the right sub-tree of the ‘currentNode’ recursively by ...