Run Length Encoding
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
- L4
Interview Prompt
Given a string, return its run-length encoding: each run of identical characters is replaced by the character followed by its run length (as a decimal integer, even if the run is 1).
Summary
AAABBB becomes 3A3B. Compress it.
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