Java Interview Questions · interview question

Which practice avoids a common mistake with Sliding Window on Arrays?

Multiple choiceMediumjava-interview-2026interviewjavapitfall

Ignore the Sliding Window on Arrays issue and rely on team discipline instead of APIs or contracts.Do not use a fixed grow-only window when the constraint requires shrinking from the left to restore validity.Prefer the version of Sliding Window on Arrays that makes behavior less predictable as long as the code compiles.Silence the Sliding Window on Arrays problem by using raw types, broad catches, or shared mutable state.

Answer and explanation

Correct answer

B. Do not use a fixed grow-only window when the constraint requires shrinking from the left to restore validity.

Why

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

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Which practice avoids a common mistake with Sliding Window on Arrays?

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