The Paired Doors
A easy Python mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Python
- Difficulty
- easy
- Seniority
- L3
Interview Prompt
A linter for our query templates rejects expressions whose grouping symbols don't line up. Given a string `s` drawn only from the characters '()[]{}', return `True` when each closing bracket matches the most recently opened bracket of the same kind and nothing is left open, and `False` otherwise. An empty string counts as balanced.
Summary
Every door you open is a promise to close it, in order.
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