Into One Stream
A easy Python mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Python
- Difficulty
- easy
- Seniority
- L5
Interview Prompt
A log collector hands you a buffer where each slot is either a single event id or a batch of ids grouped in a nested list. Return every id from `items` in one flat list, keeping their left-to-right order.
Summary
Some arrive alone, some in batches. Line them all up.
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