Question
When should a Java developer choose HashSet Membership and Deduplication deliberately?
- Choose HashSet Membership and Deduplication mainly when you want to postpone validation and fix problems manually later.
- Choose HashSet Membership and Deduplication whenever you want the code to look more advanced, even if the design gets less clear.
- Choose HashSet Membership and Deduplication only to avoid modeling domain rules explicitly in Java code.
- Use HashSet to remove duplicates, detect repeats, and support O(1)-style average membership checks in interview solutions.
Hint
Think about the production scenario where the choice genuinely improves the code.
Answer and rationale
Correct answer: D. Use HashSet to remove duplicates, detect repeats, and support O(1)-style average membership checks in interview solutions.
Use HashSet to remove duplicates, detect repeats, and support O(1)-style average membership checks in interview solutions. Interviewers often ask this to see whether you can connect the concept to real design decisions.
Track: Java