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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 of items (possibly with duplicates), return a new list containing only the first occurrence of each value, preserving input order.

Summary

Clean up duplicate events without losing the timeline.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write your python solution with real code execution
  4. Get instant feedback and a hire/no-hire decision

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