Postorder Traversal in Tree
Postorder traversal visits each node exactly once, making it O(n) in the time complexity where n is the number of nodes in a tree. The space complexity for the recursive implementation is O(h) for the Unbalanced Trees.
Postorder Traversal Algorithm
- Traverse the left subtree recursively.
- Traverse the right subtree recursively.
- Visits the root node.
Java Program to Perform the Postorder Tree Traversal
The Binary Tree can consist of nodes where each node contains the value and the references to its left and right children. The structure is organized hierarchically with a single root node at the top and each node having at Most Two Children.
In this article, we will learn to perform Postorder Tree Traversal.