The Shortest Route

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

A message-routing service keeps an adjacency dict mapping each node to the nodes it can forward to directly. Given that `graph` and two node names, return the fewest hops from `start` to `end`.

Summary

Fewer hops is always better.

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