Binary Tree Inorder Traversal — Algorithm Visualization & Coding Challenge

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Understanding Binary Tree Inorder Traversal

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Problem Overview

Binary Tree Inorder Traversal

What is Inorder Traversal?

Inorder traversal is a Depth-First Traversal method where we visit nodes in the following order:

Left subtree
Root node
Right subtree

This traversal results in nodes being visited in sorted order if the tree is a Binary Search Tree (BST).

Example

Consider the following binary tree: binary tree image

Steps for Inorder Traversal:

Start from the root (1).
Visit the left subtree (2).
Visit the left subtree of (2) → (4) (no left child, so print 4).
Print 2 (after visiting left subtree).
Visit the right subtree of (2) → (5) (no left child, so print 5).
Print 1 (after visiting left subtree).
Visit the right subtree (3) (no left child, so print 3).

Inorder Traversal Output:

4 → 2 → 5 → 1 → 3

Applications of Inorder Traversal

Sorting elements in a Binary Search Tree (BST).
Expression tree evaluation (infix notation).
Used in binary tree visualization tools.

— Written by Saurabh Patil • B.Tech CSE • Software Developer

Reference Link

https://drawtocode.org/problems/binary-tree-inorder-traversal

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