The Chain Transform

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

A word-puzzle game scores how quickly one word can morph into another, where each move changes exactly one letter and must land on a word from the game's dictionary. Given a start word, an end word, and that dictionary, find the length of the shortest chain between them.

Summary

One small step at a time can cover a great distance.

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