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Data Structures & Algorithms In Go

Solution Review: Infix-to-Postfix Conversion

Explore the process of converting infix expressions to postfix notation using stack data structures in Go. Understand how operator precedence, associativity, and parentheses are handled step-by-step. This lesson helps you implement and analyze the solution with time complexity considerations, enabling you to solve related problems effectively.

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Solution

  • We print operands in the same order as they arrive.
  • If the stack is empty or contains a left parenthesis ( on top, we push the incoming operator in the stack.
  • If the incoming symbol is a left parenthesis (, we push the left parenthesis to the stack.
  • If the incoming symbol is a right parenthesis ), we pop that from the stack and print the operators until we see a left parenthesis (. We’ll discard the pair of parentheses.
  • If the precedence of the incoming symbol is higher than the precedence of an operator at the top of the stack, then we push it to the stack.
  • If the incoming symbol has equal precedence compared to the top of the stack, we use association. If the association is left to right, we pop and print the
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