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The Trade Signal

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

Domain
Python
Difficulty
easy
Seniority
mid

Interview Prompt

The analytics team tracks a metric that fluctuates daily and wants to find the single best window where a buy-low-sell-high strategy would have yielded maximum gain. They need the gain amount and the exact day indices. Write a function that scans a list of daily values and returns the maximum possible profit from one buy and one later sell, along with the buy and sell indices.

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