Loading interview...
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
- mid, senior
Interview Prompt
A tree visualization tool needs to group nodes by their depth for side-by-side display. Write a function that takes the root of a binary tree and returns a list of lists, where each inner list contains all node values at that depth level, left to right.
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