AP CSA Unit 4 Day 2: Enhanced For Loop Limitation
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Unit 4, Data Collections • Cycle 2
Day 2 Advanced Practice • Harder Difficulty
Focus: Enhanced For Loop Limitation
Hard
Enhanced For Loop Limitation
Advanced Practice Question
Format: Enhanced For Loop Limitation
Which operation is IMPOSSIBLE with an enhanced for loop?
Which operation is IMPOSSIBLE with an enhanced for loop?
int[] nums = {1, 2, 3, 4, 5};
// Which task can't be done with for-each?
Difficulty: Hard |
Topic: Enhanced For Loop Limitation |
Cycle: 2 (Advanced)
Why This Answer?
Enhanced for loops provide read-only access to elements. You can't modify the original array elements because you get a copy of each value.
Common Mistake
Watch Out!
Thinking for-each gives you the actual array element, not a copy.
AP Exam Strategy
For-each = read-only traversal. To modify array elements, use regular for loop with index.
Master This Topic
This Cycle 2 HARD question tests enhanced for loop limitation. Review Unit 4 concepts to build mastery of data collections.
- Understanding enhanced for loop limitation
- 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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