Infix to Postfix Conversion
Prefix, Infix, Postfix Conversion Problems DSA practice problem on Onlearn.
Difficulty: medium.
Topics: Converting Infix Expression to Postfix Expression, Stack, String Manipulation, Time Complexity, Space Complexity, Algorithm, expression parsing, general programming, expression notation, stack, Infix, Prefix, Postfix Notations, Operator Precedence & Associativity, Expression Evaluation.
Problem Statement Given an infix expression, convert it to its equivalent postfix expression. The expression will consist of lowercase and uppercase English letters and digits as operands, and operators '+', ' ', ' ', '/', '^', along with parentheses '(', ')'. Assume the input expression is always valid. Input Specification A single string representing the infix expression. Output Specification A single string representing the postfix expression. Constraints The length of the infix expression will be between 1 and 10^5 characters. Sample Test Cases Example 1: Input: a+b (c^d e)^(f+g h) i Output: abcd^e fgh +^ +i Example 2: Input: (p+q) (m n) Output: pq+mn