AP CSA Unit 4 Day 13: Arraylist Remove Return Value
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Unit 4, Data Collections • Cycle 2
Day 13 Advanced Practice • Harder Difficulty
Focus: ArrayList Remove Return Value
Hard
ArrayList Remove Return Value
Advanced Practice Question
Format: ArrayList Remove Return Value
What is the output?
What is the output?
ArrayList items = new ArrayList<>();
items.add("A");
items.add("B");
items.add("C");
String removed = items.remove(1);
System.out.println(removed);
System.out.println(items);
Difficulty: Hard |
Topic: ArrayList Remove Return Value |
Cycle: 2 (Advanced)
Why This Answer?
remove(1) removes and returns the element at index 1 ("B"). The list becomes [A, C]. Prints: B then [A, C].
Common Mistake
Watch Out!
Not knowing that remove() returns the removed element.
AP Exam Strategy
remove(index) removes the element AND returns it.
Master This Topic
This Cycle 2 HARD question tests arraylist remove return value. Review Unit 4 concepts to build mastery of data collections.
- Understanding arraylist remove return value
- Tracing code execution accurately
- Avoiding common pitfalls
Ready for More Challenges?
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