Question
When should a Java developer choose Hash Tables and Hashing deliberately?
- Choose Hash Tables and Hashing mainly when you want to postpone validation and fix problems manually later.
- Use a hash-based structure for membership checks, counting, caching, and keyed lookup when ordering is not the main requirement.
- Choose Hash Tables and Hashing whenever you want the code to look more advanced, even if the design gets less clear.
- Choose Hash Tables and Hashing only to avoid modeling domain rules explicitly in Java code.
Hint
Think about the production scenario where the choice genuinely improves the code.
Answer and rationale
Correct answer: B. Use a hash-based structure for membership checks, counting, caching, and keyed lookup when ordering is not the main requirement.
Use a hash-based structure for membership checks, counting, caching, and keyed lookup when ordering is not the main requirement. Interviewers often ask this to see whether you can connect the concept to real design decisions.
Track: Java