15.3.1 - Set Interface
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Practice Questions
Test your understanding with targeted questions
What does the Set Interface prevent in a collection?
💡 Hint: Consider the unique nature of elements.
What implementation of Set maintains the order of insertion?
💡 Hint: Think about how elements are added.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the Set interface guarantee?
💡 Hint: Think about what makes a Set different from a List.
True or False: A LinkedHashSet preserves the insertion order.
💡 Hint: Recall how elements are organized.
1 more question available
Challenge Problems
Push your limits with advanced challenges
You are building a contact application that must ensure that no duplicate emails exist. Which Set implementation would you choose and why?
💡 Hint: Think about access speed versus order preservation.
Write a Java method that accepts a List of integers and returns a Set containing only the unique integers.
💡 Hint: Play with the HashSet constructor that takes a collection.
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