8.3 - Common Interfaces and Their Uses
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Practice Questions
Test your understanding with targeted questions
What is the main characteristic of a List?
💡 Hint: Think about the example of a shopping list.
Name one implementation of the Set interface.
💡 Hint: Recall we discussed HashSet earlier.
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Interactive Quizzes
Quick quizzes to reinforce your learning
Which interface allows duplicate entries?
💡 Hint: Think about where you might see duplicate items.
True or False: A Set allows duplicate elements.
💡 Hint: Recall the definition of a Set.
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Challenge Problems
Push your limits with advanced challenges
You need to create a web application that allows users to register with unique usernames, store their email addresses, and maintain a list of their purchases. Which collection types would you use for each task and why?
💡 Hint: Think about preventing duplicates and maintaining order.
In a scenario where a sports league wants to keep track of player statistics while ensuring no two players share the same ID, which collection would be best for player IDs and the statistics? Explain your reasoning.
💡 Hint: Think about how to map players to data while ensuring no duplicates.
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