Postfix Evaluation | Stack | Most Frequent Interview Question

Published: 15 September 2025
on channel: Sanyam IIT Guwahati

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Today, we're tackling the GFG (GeeksforGeeks) Problem of the Day: Postfix Expression Evaluation. I'll walk you through my C++ solution, explaining the logic behind using a stack to efficiently solve this problem.

What you'll learn in this video:
The concept of postfix expressions (Reverse Polish Notation).
How a stack data structure is used to evaluate postfix expressions.
A detailed breakdown of the C++ code for the solution.
Handling different operators like +, -, *, /, and ^.

This video is perfect for anyone preparing for coding interviews or looking to solidify their understanding of stacks and expression evaluation. Let's dive in!

🔗 Problem Link: https://www.geeksforgeeks.org/problem...

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