Which ArrayList method is used to remove the first occurrence of a specific element from the list?Question 3Answera.delete()b.removeFirst()c.erase()d.remove()
Question
Which ArrayList method is used to remove the first occurrence of a specific element from the list?
Question 3
Answer
- a.
delete() - b.
removeFirst() - c.
erase() - d.
remove()
Solution
Break Down the Problem
- Identify the purpose of the ArrayList method.
- Review the options provided to determine which method corresponds to removing an element.
Relevant Concepts
- ArrayList is a part of Java's collection framework.
- The method used to remove an element is crucial for manipulating lists.
Analysis and Detail
The options presented are:
- a. delete() - This is not a method of ArrayList.
- b. removeFirst() - This method does not exist in ArrayList; it is related to LinkedList.
- c. erase() - This is not a method used in ArrayList.
- d. remove() - This method is used in ArrayList to remove the specified element.
Based on standard Java documentation, the remove(Object o) method removes the first occurrence of the specified element from the list if it is present.
Verify and Summarize
After reviewing the methods and their purposes, the correct answer is determined.
Final Answer
The method used to remove the first occurrence of a specific element from an ArrayList is d. remove().
Similar Questions
The following LinkedList operation has similar function as removeFirst().Aremove()Bremove(Object o)Cremove(int index)DremoveFirstNode()
The remove operation returns a boolean value that indicates if the element to be removed was found in the list. A. True B. False
Which method would you use to remove an element at a specific index in a list?Answer arearemove()delete()pop()discard()
Which method is used to remove and return the last element from an array in Python?Optionspop()remove()delete()discard()
The ____________ function removes the first element of a set and the last element of a list. Select one: a. remove b. discard c. dispose d. pop
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