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The Social Graph

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
junior, mid

Interview Prompt

Our social graph stores relationships as raw groups: a pair like ['Alice', 'Bob'] means they're friends, and a singleton like ['Sam'] means Sam exists but has no connections yet. The graph team needs a quick utility to turn this into something queryable. Given a list of these groups, return how many friends each person has.

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