Arrays Review

What is returned by values[5]?

• 9
• 12
• 6
• 8

What is the value of values.length?

• 0
• 5
• 6
• 7

Index values of an array range from ______________.

• 0 to length – 1
• 1 to length
• 0 to length
• 0 to length + 1

Create an array of 12 strings called months.

• String[] months = new String[12];
• String months = new String[12];
• String[] months = new String[];
• String[12] months = new String[];

Based on the statement below, which of the following statements gives the length of the data array?
double[ ] data = new double[10];

• data.size()
• data.length
• data.size
• data.length()

What is the error in the following code fragment?
double[ ] data = new double[20];
data[20] = 15.25;

• A cast is required
• data not initialized
• A two-dimensional array is required
• Out-of-bounds error

Which of the following correctly initializes an array to contain four elements each with value 0?
I. int[ ] arr = { 0, 0, 0, 0};
II. int[ ] arr = new int[4];
III. int[ ] arr = new int[4];
     for(int i = 0; i < arr.length; i++)
       arr[i] = 0;

• I only
• I and II only
• I, II, and III
• I and III

Given the following method, what would test return if
a = {0, 2, 3, 4} and v = 1?

• -1
• 0
• 1
• 2

Given the following method, what would test return if
a = {0, 2, 3, 4} and v = 3?

• 0
• 1
• 2
• -1

Given the following method, what would test return if
a = {0, 2, 3, 4} and v = 2?

• 0
• 1
• 2
• -1