The Level Inspector
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
Given the root of a binary tree (nested dict with 'val', 'left', 'right'; subtrees are dicts or None), return a list where position i is the list of values at depth i (root = depth 0), in left-to-right order.
Summary
Each floor of the tower tells a different story.
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