The Island Counter
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
- L4
Interview Prompt
Given a 2D grid of '1' (land) and '0' (water) strings, return the number of distinct islands (connected groups of land cells using 4-directional adjacency).
Summary
Surrounded by water, connected by land - how many separate landmasses?
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