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The Double-Ended Gateway

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
mid, senior

Interview Prompt

A task scheduling system needs a data structure that supports efficient insertion and removal from both ends. Implement a deque class with push_front, push_back, pop_front, pop_back, peek_front, peek_back, and is_empty methods. Do not use collections.deque.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write your python solution with real code execution
  4. Get instant feedback and a hire/no-hire decision