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The Narrow Lens
A medium Python interview practice problem on DataDriven. Write and execute real python code with instant grading.
- Domain
- Python
- Difficulty
- medium
- Seniority
- senior
Problem
Our real-time metrics dashboard smooths noisy signal data using a sliding window. Build a class that maintains the last N values added and returns the current window average each time a new value arrives. If fewer than N values have been added, average what's present.
Practice This Problem
Solve this Python problem with real code execution. DataDriven runs your Python code in a sandboxed Docker environment and grades it instantly.