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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the primary feature of an ArrayList?
💡 Hint: Think about if you can add more items beyond its initial size.
Question 2
Easy
Can a HashSet contain duplicate elements?
💡 Hint: Remember what happens if you try to add the same item twice.
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 is the primary benefit of using a HashSet?
- Allows duplicates
- Does not maintain order
- Stores key-value pairs
💡 Hint: Think about what sets are traditionally used for.
Question 2
True or False: An ArrayList can grow and shrink in size dynamically.
- True
- False
💡 Hint: Reflect on how you might add items without knowing the total.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design a small program using ArrayList to manage a grocery list that allows adding, removing, and viewing items. How does the underlying structure support these operations?
💡 Hint: Consider how items are stored based on their positions.
Question 2
Create a scenario using HashMap to link employee IDs with names. How would you ensure that data integrity is maintained?
💡 Hint: Think about how you would search for an employee in a directory.
Challenge and get performance evaluation