Next in Line
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
A server pool's dispatch layer is driven by a replayed command stream `ops`, where each entry is a list: `['add_server', id]` registers a server, `['remove_server', id]` deregisters one, and `['get_server']` sends the next request to a server and returns its id. Requests go to servers in the order they registered, wrapping from the last back to the first, and when a server is deregistered the rotation carries on over the survivors so that the server that was due next still serves next, with none skipped or served twice in a single pass. Return the ids produced by the `['get_server']` entries in the order those entries appear; `add_server` and `remove_server` add nothing to the output.
Summary
Every server gets its turn. Keep the line honest as the pool changes.
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