DSA SectionEasy

Infix Prefix Postfix

Detailed guide and Python implementation for the 'Infix Prefix Postfix' problem.

Problem Statement

Easy

Write a function infix_to_postfix(expression) that takes a string expression representing an infix mathematical expression and returns the equivalent postfix expression. You may assume operators are +, -, *, /, ^ and parentheses are (, ).

Constraints
  • 1 <= len(expression) <= 100
  • Expression contains only valid variables, operators, and parentheses.

Examples

Example 1
Input
expression = "A*(B+C)/D"
Output
"ABC+*D/"
Explanation

Infix 'A*(B+C)/D' converted to postfix is 'ABC+*D/'.

Need a Hint?
Consider using Stacks-specific data structures like sets or heaps.
Edge Cases to Watch
  • Empty input structures
  • Single element inputs
  • Large numerical bounds

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