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The Consecutive Sequence Finder

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
senior

Interview Prompt

The ETL pipeline assigns incrementing batch IDs to every load, but failed batches leave gaps. The ops dashboard needs to report the longest unbroken run of consecutive batch IDs from an unordered list of successful loads. Write a function that finds the length of the longest consecutive integer sequence without sorting the input.

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