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Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is an array?
💡 Hint: Think of how items are stored in a list.
Question 2
Easy
What is a String in Java?
💡 Hint: Consider how you write text messages.
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 type of data does an Array store?
- Mixed data types
- Similar data types
- Only integers
💡 Hint: Look at how we defined an array earlier.
Question 2
True or False: Strings in Java can be changed after they are created.
- True
- False
💡 Hint: Recall what we learned about String properties.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Write a program that initializes an array of 5 numbers, sorts it, and prints the numbers in ascending order.
💡 Hint: Use the Arrays.sort() method for sorting.
Question 2
Create a method that takes a String as input and returns the substring of the first five characters.
💡 Hint: Look up the substring() method for Strings.
Challenge and get performance evaluation