The Last Instance
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
- L3
Interview Prompt
An on-call engineer noticed the tag feed in `items` is full of repeats, because a reader re-reports a tag every time it cycles back into range. Collapse it so each value survives exactly once.
Summary
When duplicates appear, only the last one counts.
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