Python Interview Questions · interview question
In Python, which comparison about Prefix Sums is accurate?
Multiple choiceEasypython-interview-2026interviewpythoncomparison
Answer and explanation
Correct answer
B. Prefix sums front-load preprocessing cost, while naive repeated range scans pay linear cost over and over again.
Why
Prefix sums front-load preprocessing cost, while naive repeated range scans pay linear cost over and over again. This is the comparison that usually separates memorization from understanding.
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