15.8.2 - Comparator Interface
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Practice Questions
Test your understanding with targeted questions
What is the purpose of the Comparator interface in Java?
💡 Hint: Think about when you'd need to sort items differently.
What method do you need to implement in a Comparator?
💡 Hint: What are the two objects you compare?
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What does the Comparator interface allow you to do?
💡 Hint: Think about what flexibility you need beyond natural ordering.
True or False: A Comparator can only sort objects in increasing order.
💡 Hint: Consider how you could reverse the sorting order.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
Create a Comparator for a class that represents products in a store. The Comparator should first compare products by price, and then by name if prices are the same.
💡 Hint: Think about the significance of each attribute when comparing.
Imagine you have a data structure that needs to sort student records by GPA, and if two students have the same GPA, by last names. Design your solution using the Comparator interface.
💡 Hint: What condition checks will you need?
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