The Market Timer
A medium 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
- medium
- Seniority
- L3
Interview Prompt
A `prices` list holds one share price per trading day in chronological order. Return the largest gain from a single purchase on one day and a sale on a later day.
Summary
Buy low, sell later. The whole game is when.
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