Collections · interview question
Given a HashSet<Integer> with elements {1, 2, 3}, what will be the result of calling contains(2)?
Multiple choiceMediumchapter-4-curatedpremiumcollectionsset-interface-and-hashset
Answer and explanation
Correct answer
A. True
Why
The contains() method will return true if the element 2 is present in the HashSet. HashSet is optimized to quickly check membership using the element's hash code.
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