The Impersonator
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
- L5
Interview Prompt
Implement a FIFO queue backed by two stacks. Support enqueue(x), dequeue() (return value), peek() (return front). Test harness passes operations; returns parallel results: None for enqueue, the value for dequeue/peek.
Summary
You only have stacks. Make a queue anyway.
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