4.2.1 - Custom Sorting with Comparator and Comparable
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Practice Questions
Test your understanding with targeted questions
What method must a class implement to be Comparable?
💡 Hint: Think about the method name and its purpose.
What does the compare method in a Comparator return?
💡 Hint: Recall the three possible outcomes of comparisons.
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Interactive Quizzes
Quick quizzes to reinforce your learning
Which interface is used for defining the natural ordering of a class?
💡 Hint: Think about the interface that modifies the object itself.
True or False: A Comparator can be used to define multiple sorting criteria.
💡 Hint: Reflect on what you need if you want to compare in different ways.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Create a Student class and implement both Comparable and a Comparator that sorts by name and marks.
💡 Hint: Think of how you would structure the class and implement the two interfaces.
Consider a scenario where you have a list of employees that you want to sort first by department and then by salary. How would you implement this?
💡 Hint: Remember that you can chain comparators together for multiple sorting criteria.
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