What the Card Remembers
A medium 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
- medium
- Seniority
- mid
Interview Prompt
A card-authorization service records temporary holds as `[start, end]` minute offsets, and a single card can accumulate many holds that pile onto each other over a busy day. For each card, collapse those holds into the continuous windows the money was actually held.
Summary
A hold on your money is never a single moment. Rebuild the windows it actually lived in.
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