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A medium Python mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.

Domain
Python
Difficulty
medium
Seniority
L5

Interview Prompt

A maintenance-window export hands you a list of `[start, end]` pairs in `intervals`, and many of them overlap. Collapse each group of overlapping ranges into one span that covers the whole group, and return the cleaned spans.

Summary

Windows stacked on windows. Find the real spans.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write and run your Python against test cases
  4. Answer the interviewer's follow-up questions, then get a hire or no-hire decision