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The Market Timer

A medium Python mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.

Domain
Python
Difficulty
medium
Seniority
L3

Interview Prompt

Given a list of prices, return the maximum profit from a single buy then later sell, or 0 if none is profitable.

Summary

One buy, one sell - when do you make the most?

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write your python solution with real code execution
  4. Get instant feedback and a hire/no-hire decision

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