The Bit Counter
An easy 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
- easy
- Seniority
- L3
Interview Prompt
Given a non-negative integer, return how many 1-bits its binary representation contains. Work on the integer's bits directly with bitwise operations rather than converting it to a string.
Summary
How many lights are on in the binary representation?
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