Collections · interview question
Which operation is most efficient for an ArrayList?
Multiple choiceMediumchapter-4-curatedpremiumcollectionslist-interface-and-arraylist
Answer and explanation
Correct answer
A. Accessing an element by index
Why
Accessing an element by index in an ArrayList is most efficient due to its O(1) time complexity, as it directly retrieves the element from the backing array.
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