Collections · interview question
Which collection would you use to implement a product catalog where each product can be accessed by its unique SKU quickly?
Multiple choiceMediumchapter-4-curatedpremiumcollectionschoosing-the-right-collection
Answer and explanation
Correct answer
B. HashMap
Why
HashMap provides constant-time complexity for insertions and lookups, making it ideal for a catalog where products are accessed by unique keys like SKUs.
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