The Bit Reverser
A medium Python mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.
- Domain
- Python
- Difficulty
- medium
- Seniority
- L4
Interview Prompt
A firmware engineer is decoding a sensor that shifts each register out least-significant bit first, so the integer captured on the host has the register's bits in reverse order. Given that captured value, return the register's true value.
Summary
Sometimes the answer is literally backwards.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write and run your Python against test cases
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision