When Hours Collide
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
A shared room-booking calendar stores each reservation as a `[name, start, end]` record, and you need to flag every scheduling collision. Return all pairs of events whose ranges overlap, where each range is half-open [start, end) so an event ending exactly when another begins is not a collision. Report each pair once as `[name_a, name_b]` with the earlier-starting event first, ordered by name_a's start then name_b's start, and return an empty list when nothing collides.
Summary
Two reservations, one slot. Find every clash.
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