Full Circle
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
- L3
Interview Prompt
A forwarding table is stored as a flat array `next_indices`, where each slot holds the index it forwards to next, or -1 to mark the end of a chain. Starting from slot 0 and following the pointers, return the index of the first slot the walk reaches twice.
Summary
Follow the chain long enough and it might loop back.
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