Array Basics Quiz

What does the following code create? int[] numbers = new int[5];

• An array that can store 5 decimal numbers

• An array that can store 4 whole numbers

• A single whole number variable with the value 5

• An array that can store 5 whole numbers

After running int[] numbers = new int[5], what is the value of numbers[2]?

• 2

• null

• undefined

• 0

int[] scores = {85, 92, 78, 95, 88};

int x = scores[1] + scores[3];

System.out.println(x);

What is the output of the code above?

• 163

• 187

• 170

• 180

int[] values = {4, 8, 12, 16};

values[2] = values[0] + values[1];

System.out.println(values[2]);

What is the output of the code above?

• 12

• 16

• 20

• 24

Given: int[] data = new int[4]; Which of these lines will cause an ArrayIndexOutOfBoundsException?

• data[0] = 5;

• data[3] = 12;

• data[4] = 8;

• data[2] = 15;

Which line correctly creates an array to store 6 string values?

• String names[6];

• String[] names = new String[6];

• String[] names = 6;

• names[] = new String[6];

What is the index of the first element in an array?

• 1

• -1

• 0

• None of the above

What will be the size of this array? double[] prices = new double[10];

• 0

• 9

• 10

• 11

Given: String[] colors = {"red", "blue", "green"}; What is colors[0]?

• green

• red

• blue

• null

How do you find the length of an array called numbers?

• numbers.size()

• numbers.length()

• numbers.length

• size(numbers)