AP CSA Unit 4 Day 8: Arraylist Get vs. Set
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Unit 4, Data Collections • Cycle 2
Day 8 Advanced Practice • Harder Difficulty
Focus: ArrayList Get vs Set
Hard
ArrayList Get vs Set
Advanced Practice Question
Format: ArrayList Get vs Set
What is the output?
What is the output?
ArrayList words = new ArrayList<>();
words.add("cat");
words.add("dog");
words.add("bird");
words.set(1, "fish");
System.out.println(words);
Difficulty: Hard |
Topic: ArrayList Get vs Set |
Cycle: 2 (Advanced)
Why This Answer?
set(1, "fish") replaces the element at index 1. "dog" is replaced with "fish". Result: [cat, fish, bird].
Common Mistake
Watch Out!
Confusing set() (replace) with add() (insert/append).
AP Exam Strategy
set(index, value) = replace. add(value) = append. add(index, value) = insert.
Master This Topic
This Cycle 2 HARD question tests arraylist get vs set. Review Unit 4 concepts to build mastery of data collections.
- Understanding arraylist get vs set
- Tracing code execution accurately
- Avoiding common pitfalls
Ready for More Challenges?
Cycle 2 questions prepare you for the hardest AP CSA exam questions.
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