Corner to Corner
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
A square matrix from a tabular export arrives flattened: a single row-major list `cells` holding n*n integers, plus its side length `size`. Return the values on the main diagonal, from the top-left corner to the bottom-right. An empty buffer returns an empty list.
Summary
A grid pressed flat still remembers its corners.
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