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Row Aggregates

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
L3

Interview Prompt

We store sensor readings as a grid, one row of numbers per device. Return the combined total for each device's row.

Summary

Each row holds its own summary.

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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