Have an account?
Skip to Content
Build your own quiz
20 questions
Show Answers
See Preview
- 1. Multiple Choice
Which of the following is FALSE about arrays on Java
A java array is always an object
Length of array can be changed after creation of array
Arrays in Java are always allocated on heap
- 2. Multiple Choice
What is the length of the following array: byte[] data = { 12, 34, 9, 0, -62, 88 };
1
5
6
12
- 3. Multiple ChoiceHow will you identify a single array?single curly bracketssingle square bracketsmultiple squares bracketssingle angled brackets
- 4. Multiple Choice
What are the legal indexes for the array ar, given the following declaration:
int[] ar = {2, 4, 6, 8 };
0, 1, 2, 3
1, 2, 3, 4
2, 4, 6, 8
0, 2, 4, 6
- 5. Multiple ChoiceWhat does the following segment of code print out? int[] numArray = { 2, 7, 4, 12, 0, 2 };
System.out.println("Number: " + numArray[2]);Number: 2Number: 7Number: 4Number: 12 - 6. Multiple ChoiceWhat does the following segment of code print out? int[] numArray = { 2, 7, 4, 12, 0, 2 };
System.out.println("Number: " + numArray[0]);Number: 2Number: 7Number: 4Number: 12 - 7. Multiple ChoiceWhat does the following segment of code print out? int[] numArray = { 2, 7, 4, 12, 0, 2 };
System.out.println("Number: " + numArray[numArray.length - 1]);Number: 2Number: 0Number: 12Number: 6 - 8. Multiple ChoiceWhat does the following segment of code print out? int[] numArray = { 2, 7, 4, 12, 0, 2 };
System.out.println(numArray.length);4567 - 9. Multiple ChoiceWhat is the correct way to initialize an array with 10 positions?int numbers = new int[10];int[] numbers = new int[];int[10] numbers = new int[10];int[] numbers = new int[10];
- 10. Multiple ChoiceWhat is the correct way to create an array with these three numbers: 12 8 15int[] = {12, 8, 15};int[] nums = {12 8 15};int[] nums = {12, 8, 15}int[] nums = {12, 8, 15};
- 11. Multiple ChoiceTrue or False: An array can be store different types of data (like store both doubles and ints).TrueFalse
- 12. Multiple Choice
int [ ] nums = {2, 3, 5, 8, 9, 11};
How would you access the fourth element in nums
nums[4]
nums[3]
nums(4)
nums(3)
- 13. Multiple Choice
X is ?
Array
Variable
- 14. Multiple Choice
X is ?
Array
variable
- 15. Open Ended
What should be written in Comment #1 (i.e. what is the purpose of the first for loop)?
- 16. Open Ended
What should be written in Comment #2 (i.e. what is the purpose of the second for loop)?
- 17. Open Ended
Write a for loop that create an array of 10 items, each item is 2 more than the previous item.
- 18. Multiple Choice
Which of the following is a correct way to create/initialize an array? Select all that apply.
int ar [ ] = { 1, 2, 3, 4 };
int [ ] ar = new double [ 4 ];
int [ ] ar = { 1, 2, 3, 4 };
int [ ] ar = new int [ 4 ];
int ar [ ] = [ 1, 2, 3, 4 ];
- 19. Multiple ChoiceIndex values of an array range from ______________.0 to length – 11 to length0 to length0 to length + 1
- 20. Multiple ChoiceGiven the following method, what would test return if
a = {0, 2, 3, 4} and v = 3?012-1 - Answer choicesTagsAnswer choicesTags