Java Interview Questions · interview question
In Java, which comparison about Prefix Sums on Arrays is accurate?
Multiple choiceEasyjava-interview-2026interviewjavacomparison
Answer and explanation
Correct answer
A. Prefix sums front-load linear preprocessing, while naive range queries repeat linear work for every question.
Why
Prefix sums front-load linear preprocessing, while naive range queries repeat linear work for every question. This is the comparison that usually separates memorization from understanding.
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