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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
junior, mid

Interview Prompt

You are given a list of stock prices where each index represents a day. You may buy on one day and sell on any later day. Determine the maximum profit you can achieve from a single buy-sell transaction. If no profit is possible, return 0.

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