Collections · interview question
Which of these operations would typically have the worst performance on an ArrayList?
Multiple choiceMediumchapter-4-curatedpremiumcollectionslist-interface-and-arraylist
Answer and explanation
Correct answer
A. Removing the first element
Why
Removing the first element of an ArrayList requires shifting all subsequent elements, leading to a time complexity of O(n), making it less efficient than other operations listed.
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