Stack Visualizer

Step-by-Step Expression Calculator & DSA Tutorial

Analyze conversions and calculations using the Stack data structure.

Example for Infix → Postfix: 10 + ( 3 * 2 ) - 5 should yield Postfix: 10 3 2 * + 5 - and Result: 11.

Postfix Notation:

Final Result:

Understanding Stack Visualization and Notation

The 'Stack Data Structure' is a fundamental concept in Computer Science, operating on the 'LIFO (Last-In, First-Out)' principle. This 'Stack Visualizer' tool demonstrates its use in evaluating arithmetic expressions. The key challenge in calculator logic is resolving 'Operator Precedence' (e.g., multiplication before addition).

We use the 'Shunting-Yard Algorithm' to convert the standard 'Infix Notation' (e.g., A + B * C) you enter into 'Postfix Notation' (e.g., A B C * +), which is easier for a computer to process using a single stack. In the 'Postfix Evaluation' phase, operands are pushed onto the stack until an operator is encountered, at which point the last two operands are popped, computed, and the result is pushed back onto the stack. This entire step-by-step process is logged below to provide full transparency of the DSA mechanism.

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