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
Given a list of groups (each group is a list of person names), compute per-person friend count: for a group [A, B], both A and B gain each other as friends. For a singleton [X], X exists but gains no friend from that row. Friendships are deduplicated: if A and B appear together in multiple groups, it is still one friendship. Return a dict mapping each person to their distinct friend count.
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