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Pivot Records

A hard Python mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.

Domain
Python
Difficulty
hard

Interview Prompt

A pivot step reshapes a flat list of row-col-value records into a nested lookup structure. Each record is a dict with 'row', 'col', and 'val' keys. Return a nested dict of the form {row: {col: val}}.

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