The File Tree Builder
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
- L5
Interview Prompt
Given a list of file paths (slash-separated), build a nested dict representing the directory tree. Directories map to inner dicts; files map to None. Return the resulting dict.
Summary
Flat paths. Build the nested tree.
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