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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does int[] numbers = new int[5]; do?
💡 Hint: What kind of data structure is an array?
Question 2
Easy
Why is memory allocation important?
💡 Hint: What happens if we don’t allocate memory for our array?
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 declaration int[] numbers; do?
- Declares an array and allocates memory
- Only declares an array
- Throws an error
- Initializes the array with zero
💡 Hint: What does this statement do on its own?
Question 2
True or False: The statement int[] numbers = new int[5]; both declares and initializes the array.
- True
- False
💡 Hint: What does this statement achieve with both parts?
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Create a class method that takes a size as an argument and returns an initialized array of integers filled with zeros.
💡 Hint: Think about what initial value you’d like to fill the array with.
Question 2
Given a situation where memory allocation fails, what are some fallback methods that can be implemented?
💡 Hint: Consider what happens when the system runs out of memory.
Challenge and get performance evaluation