Collections · interview question
How would you explain a key advantage of using a HashMap over a TreeMap in an interview?
Multiple choiceMediumchapter-4-curatedpremiumcollectionschoosing-the-right-collection
Answer and explanation
Correct answer
C. Faster insertion and lookup
Why
HashMap typically offers faster insertion and lookup operations (O(1) on average) compared to TreeMap, which maintains a sorted order and has O(log n) time complexity for basic operations.
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