The Schedule Cleaner
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
- L4
Interview Prompt
You're consolidating playback sessions from a streaming service's event logs, where each session in `intervals` is a `[start, end]` timestamp pair that may arrive in any order. Collapse every run of overlapping sessions into one continuous span and return the spans sorted by start time. Sessions that only touch at an endpoint still belong to the same span, so `[1, 3]` and `[3, 5]` become `[1, 5]`.
Summary
Overlapping sessions. One clean line.
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