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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 about how the data types in Java work.
Question 2
Easy
How do you access an element in an array?
💡 Hint: Remember that indexing starts at 0.
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 length property of an array return?
- The size of the array
- The last index of the array
- The data type of the array
💡 Hint: Think about how arrays' sizes are defined.
Question 2
True or False: The for-each loop can modify the elements of the array while iterating.
- True
- False
💡 Hint: Consider what modifications are allowed during iterations.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given an array of integers, write a Java method that returns the sum of all elements using a for-each loop.
💡 Hint: Think about how you can accumulate values as you loop through the array.
Question 2
Create a Java method that accepts an array of strings and prints only those strings that have more than three characters using a for loop.
💡 Hint: You will need a condition inside the loop to filter the strings.
Challenge and get performance evaluation