The Shadow Cleaner
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
- L3
Interview Prompt
Given a list, return a new list with duplicates removed, preserving first-occurrence order. Do NOT use set(), dict.fromkeys(), or similar built-in dedup helpers.
Summary
Remove the repeats. No shortcuts.
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