Where They Part
A hard Python mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Python
- Difficulty
- hard
- Seniority
- L4
Interview Prompt
You are given `patterns`, a batch of object-storage key globs where `?` matches any single character. Return the longest leading run of positions where the patterns can all agree, resolved to its characters: a position holds when every non-`?` character there is identical, and the run ends the instant two concrete characters clash or any pattern runs out. Return an empty string when `patterns` is empty.
Summary
They all start the same way. How far?
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