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Ordered Character Check
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
- staff
Interview Prompt
Our state machine validator needs to verify that transitions follow the correct order. Write a function called all_before that takes a string of only 'A' and 'B' characters and returns True if every A comes before every B. Empty strings and single-character strings return True.
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