Practice Set Interface And Its Implementations (15.3) - Collections and Generics

Practice: Set Interface and Its Implementations

Lesson 15.3Collections and Generics

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10 questions

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4 cards from this section. Quick, good the night before a test.
Exercise
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Quiz
4 questions · about 3 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the primary characteristic of a Set in Java?
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Think about how a collection handles similar items.
Question 2.
Which Set implementation maintains the order of insertion?
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This implementation has 'linked' in its name.
3Question 3.
What does the Set interface in Java ensure?
- Allows duplicates
- No duplicates allowed
- Sorts elements
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Think about how duplicate values are handled.
4Question 4.
True or False: LinkedHashSet maintains the order of how elements are added.
- True
- False
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Reflect on its name and structure.
Question 5.
Consider a scenario where you are developing a school system to maintain a unique list of student IDs. Discuss the advantages and disadvantages of choosing each Set implementation for this task.
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Evaluate how each implementation's characteristics align with the requirements of the task.
Question 6.
Implement a collection to store a list of unique book titles that must be maintained in alphabetical order. Discuss how you would achieve this and why your chosen implementation is optimal.
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Think of the importance of organization for the book titles.

6 more questions in this section. Enroll free to practise them all.