The Triple Alliance

A hard 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
hard
Seniority
L4

Interview Prompt

In ledger reconciliation the same amount lands on many lines and some entries are credits, so `nums` can hold duplicate and negative values. Given `nums` and a target `k`, return every trio of values taken from three distinct positions that sums to `k`.

Summary

Three numbers, one target.

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