Infix to Postfix Conversion Using Stack | DSA Algorithm & Manual Tracing in C
Why does the computer need Postfix? In this comprehensive DSA tutorial, we explain the Infix to Postfix conversion process using the Stack data structure.
We cover the critical rules of operator precedence (Power Multiply/Divide Add/Subtract) and demonstrate the algorithm using a complex example: ((A+B)/(C-D)). By the end of this video, you will be able to trace any mathematical expression manually and understand the logic required to code it in C.
What's Inside:
✅ Understanding Infix, Postfix, and Prefix notation.
✅ The role of Operator Precedence and Associativity.
✅ Step-by-step Stack Algorithm explanation.
✅ Detailed manual tracing with a complex example.
📍 Timestamps:
00:00 - Introduction: Why convert Infix to Postfix?
01:04 - Manual Conversion shortcut (The "Move Operator" trick)
01:50 - Operator Precedence Rules (Priority levels)
03:52 - Formal Algorithm: Initializing the Stack
05:19 - Rule 1: Handling Operands (A, B, C)
05:50 - Rule 2: Handling Left Parentheses
06:20 - Rule 3: Handling Operators (+, -, *, /)
08:40 - Rule 4: Handling Right Parentheses
10:01 - Manual Tracing Example: ((A+B)/(C-D))
14:15 - Tracking the Stack state and Output String
18:20 - Conclusion & Final Postfix Result
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