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Python: Which practice avoids a common mistake with Sliding Window?

Difficulty:

Medium

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

Which practice avoids a common mistake with Sliding Window?

  1. Ignore the Sliding Window issue and rely on team discipline instead of clearer APIs or invariants.
  2. Silence the Sliding Window problem by using broad catches, hidden globals, or extra shared mutable state.
  3. Do not use a grow-only window when the constraint requires shrinking from the left to restore validity.
  4. Prefer the version of Sliding Window that makes behavior less predictable as long as the code still runs.

Hint

Look for the option that protects correctness instead of hiding the problem.

Answer and rationale

Correct answer: C. Do not use a grow-only window when the constraint requires shrinking from the left to restore validity.

Do not use a grow-only window when the constraint requires shrinking from the left to restore validity. This is a common failure mode in real Python code and a frequent interview follow-up.

Track: Python