8.9 - Quick Review Questions
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Practice Questions
Test your understanding with targeted questions
What is the main difference between ArrayList and LinkedList?
💡 Hint: Think about how data is stored and accessed in each.
What happens when you add a duplicate to a HashSet?
💡 Hint: Consider what HashSet's purpose is regarding duplicates.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary use of a HashSet?
💡 Hint: Think about the properties of a set.
True or False: An ArrayList can contain null values.
💡 Hint: Consider what data types can be stored.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Create a program that manages a list of students using ArrayList and allows adding/removing students. What happens if a student is added twice?
💡 Hint: Consider using a condition and a method to determine if the name already exists.
Design a phone book application using a HashMap. How will you handle scenarios where a user tries to add an existing entry?
💡 Hint: Think of the scenarios where verification is necessary.
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