Shortest Unique Metric Tag

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
L5

Interview Prompt

Dashboard autocomplete needs a tag for every fully-qualified metric key in `metrics` (like 'bookings.checkout.success_rate'): the shortest contiguous piece of its name that appears inside no other metric's name.

Summary

One token per metric. Make it unambiguous.

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