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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the syntax to access the first element of an array named 'data'?
💡 Hint: Remember that indexing starts at zero.
Question 2
Easy
Given an array 'int[] arr = {1, 2, 3};', what is 'arr[1]'?
💡 Hint: Look at the position of the elements carefully.
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 index would you use to access the first element of an array?
- 1
- 0
- 2
💡 Hint: Think about how we count.
Question 2
True or False: An ArrayIndexOutOfBoundsException occurs when accessing a valid index.
- True
- False
💡 Hint: Consider what bounds mean.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Write a method that checks if a given index is valid for a given array, returns true if valid, otherwise false.
💡 Hint: Think about boundaries to avoid errors.
Question 2
Construct a program that fills an array with random numbers and prints them. Ensure you access each number using its index.
💡 Hint: Make sure to use random functions and loops effectively.
Challenge and get performance evaluation