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Subarray Signal

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
mid

Interview Prompt

Our financial analytics engine needs to find the most profitable contiguous trading window. Write a function that takes a list of daily P&L values (possibly negative) and returns the maximum sum achievable by any contiguous subarray of at least one element.

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