Solution: Evaluate Postfix Expression Using a Stack
Explore how to evaluate postfix arithmetic expressions using a stack in Go. This lesson walks you through each step, teaching you to differentiate operands from operators, process calculations by popping values from the stack, and pushing results back for final output. You will also understand its linear time and space complexity, essential for coding interviews involving stack operations.
We'll cover the following...
Statement
Given a string, exp, represents an arithmetic expression in a
exp and return the resulting integer value.
The rules are given below:
The valid operators are
'+','-','*', and'/'.Each operand may be an integer or another expression.
The division between two integers always truncates toward zero.
There will not be any division by zero. ...