Which of the following will change the list so that it looks like: Andy Bart Carl Doug? A) list.remove(5); B) list.remove(list.size()-1); C) list.clear("Elmo"); D) list.remove(lis... Which of the following will change the list so that it looks like: Andy Bart Carl Doug? A) list.remove(5); B) list.remove(list.size()-1); C) list.clear("Elmo"); D) list.remove(list.size());
Understand the Problem
The question is asking which code option will modify the original ArrayList to remove the last element ('Elmo') so that the remaining elements are 'Andy', 'Bart', 'Carl', and 'Doug'. We need to evaluate each option to determine which one correctly achieves that.
Answer
list.remove(list.size()-1);
The final answer is list.remove(list.size()-1);
Answer for screen readers
The final answer is list.remove(list.size()-1);
More Information
The method list.remove(list.size()-1) removes the last element from an ArrayList, which is needed to eliminate the last listed item, "Elmo," resulting in the list containing Andy, Bart, Carl, Doug.
Tips
A common mistake is not realizing that list.size()-1 corresponds to the last element's index because list indices in Java are 0-based.
Sources
- Quiz on Java Programming: Arrays, Recursion & ArrayList - CliffsNotes - cliffsnotes.com
- Examine the following code ArrayListString list new ArrayListString ... - coursehero.com
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