Collections · interview question
Given an e-commerce application that requires frequent updates and lookups of product prices, which collection would you choose and why?
Multiple choiceHardchapter-4-curatedpremiumcollectionscollection-performance-basics
Answer and explanation
Correct answer
D. HashMap for key-value association
Why
HashMap is ideal for storing key-value pairs like product IDs and prices, offering average constant-time complexity for insertions and lookups.
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