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
- L3
Interview Prompt
You're filling the friend-count column from a social graph export, where each record is either a pair of names, meaning those two people are mutual friends, or a single name, meaning a person who has shown up with no connections. Return a mapping from every person who appears to how many friends they have, where each pair adds one to both of its names and anyone who only ever appears alone lands at 0.
Summary
Everyone knows someone.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your python solution with real code execution
- Get instant feedback and a hire/no-hire decision