The Postfix Processor
A medium Python mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Python
- Difficulty
- medium
- Seniority
- L4
Interview Prompt
Given a list of string tokens forming a valid postfix (RPN) expression supporting integers and operators '+', '-', '*', '/', evaluate it. Use integer-truncation-toward-zero division for '/'. Return the integer result.
Summary
Math without parentheses - the operators come after the numbers.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your python solution with real code execution
- Get instant feedback and a hire/no-hire decision