Core Java · interview question
How does a HashMap determine the bucket in which to store an entry?
Multiple choiceMediumchapter-4-curatedpremiumcore-javaequals-and-hashcode-in-collections
Answer and explanation
Correct answer
D. It uses the hashCode of the key.
Why
A HashMap uses the hashCode of the key to determine which bucket to store the entry in. This allows the map to efficiently locate the entry when needed. The hashCode is used to compute an index that points to the bucket, optimizing the time complexity of operations.
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