Collections · interview question
What does the 'contains' method of a HashSet use to check for the presence of an element?
Multiple choiceMediumchapter-4-curatedpremiumcollectionscollection-performance-basics
Answer and explanation
Correct answer
B. Hash code and equals method
Why
HashSet uses the hash code to narrow down the potential location and then checks equality using the equals method to confirm the presence of an element.
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