## What is post-order traversal?

## What is reverse postorder traversal in Python?

- (R)Recursively traverse its right subtree. When this step
**is**finished, we are back at nagain. (N)Process nitself. In normal**postorder traversal**, visit the left subtree before the right subtree. If we visit the right subtree before visiting the left subtree, it**is**referred to as reverse**postorder traversal**.

## How to find the postorder traversal of a binary tree?

- Given a binary tree, find the
**Postorder Traversal**of it. You don't need to read input or print anything. Your task**is**to complete the function**postOrder**() that takes root node as input and returns an array containing the**postorder traversal**of the given Binary Tree.

## How do you make an iterative postorder traversal?

- Algorithm of iterative
**postorder traversal**(one stack) Step 1: Create one empty stack. Step 2: Set current_node = root Step 3: while(current_node!=NULL) Push current_node->right into the stack Push current_node into the stack Step 4: Pop an element from the stack and set it as a current node.

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