The Trade Signal
An easy 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
- easy
- Seniority
- L4
Interview Prompt
We've got a list of daily prices for an asset. Find the single buy-then-sell window with the biggest gain, where the buy has to happen before the sell, and return the gain along with the buy and sell day indexes.
Summary
Buy low, sell high. Identify the ideal moment.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write and run your Python against test cases
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision