The Market Streak
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
- L4
Interview Prompt
You've got a stock's daily closing prices in `prices`, oldest first. For each day, report the length of the run of consecutive days ending at that day where no earlier day in the run cost more than that day's price. Return one count per day, in the same order.
Summary
Some stocks run longer than you think.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your python solution with real code execution
- Get instant feedback and a hire/no-hire decision