PostOrder traversal of binary tree implementation in Java

By | July 15, 2020

This post talks about PostOrder traversal of binary tree implementation in Java

In postOrder traversal, the root is visited after both left and right subtrees.

PostOrder traversal is defined as follows:

  • Traverse the Left Subtree
  • Traverse the Right Subtree
  • Visit the root

Binary Tree For Traversal

PostOrder traversal can be implemented either recursive and iterative approach. Both Approaches have shown below:

Recursive Approach:

Time Complexity: O(n) and Space Complexity: O(n)

Non-Recursive Approach:

Time Complexity: O(n) and Space Complexity: O(n)

Below is the Complete Source code: 

PostOrderProcessingInBinaryTree

BinaryTree.java

 

ClientTest.java

The output of This Program:

…..Binary Tree postOrder Processing output using Recursive method….
4 5 2 6 7 3 1
…..Binary Tree postOrder Processing output using Iterative method….
4 5 2 6 7 3 1

You May Also Like:

Introduction to Tree Data Structure
Introduction to Binary Tree
Structure of Binary Trees
Operations and use of Binary Trees
Binary Tree Traversals
PreOrder traversal of binary tree implementation in Java
InOrder traversal of binary tree implementation in Java

That’s all about PostOrder traversal of binary tree implementation in Java?
If you have any feedback or suggestion please feel free to drop in below comment box.

Leave a Reply

Your email address will not be published.