The Build Order

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

Each of `n` build modules is numbered `0` to `n-1`, and every `[a, b]` pair in `edges` means module `a` can only be built once module `b` has been built. Return an order in which every module can be built.

Summary

Some tasks must wait for others to finish first.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write and run your Python against test cases
  4. Answer the interviewer's follow-up questions, then get a hire or no-hire decision