The Squeeze

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 string, return its run-length encoded form: each run of identical characters becomes that character followed by the run's length, as in 'aabcccaaa' -> 'a2b1c3a3'.

Summary

aaabbb gets old fast. Shrink it.

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