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The Bit Ladder

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
junior, mid

Interview Prompt

A hardware diagnostics tool needs to count the number of 1-bits for every integer from 0 to n to analyze bit patterns. Write a function that takes a non-negative integer n and returns a list where each element at index i is the number of 1-bits in i.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write your python solution with real code execution
  4. Get instant feedback and a hire/no-hire decision