The Gate Keeper
An easy Python mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.
- Domain
- Python
- Difficulty
- easy
- Seniority
- L4
Interview Prompt
An expression validator receives short strings built only from the bracket characters `()[]{}` and has to confirm each one is well-formed before it moves downstream. A string passes when every opening bracket is closed by one of the same type in the correct order.
Summary
Not all openings have a closing.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write and run your Python against test cases
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision