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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What method does the Comparable interface require to be implemented?
💡 Hint: Think about how one object might compare itself to another.
Question 2
Easy
What is the purpose of the Comparator interface?
💡 Hint: Consider scenarios where you might want different sorting criteria.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does the Comparable interface provide?
- Custom ordering
- Natural ordering
- Does nothing
💡 Hint: Focus on the primary role of the Comparable interface.
Question 2
True or False: The Comparator interface can only be used for natural ordering.
- True
- False
💡 Hint: Consider the different functionalities of Comparable and Comparator.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Write a Java class that implements Comparable and gives a natural ordering based on two attributes - age and name.
💡 Hint: Think about the logic needed to handle the two comparisons together.
Question 2
Implement a Comparator for a class that represents a book with attributes for title and publish year. Sort it first by year, then by title if years are the same.
💡 Hint: You’ll need to use two comparisons in your Comparator to account for both criteria.
Challenge and get performance evaluation