Arrays Review

Which of the following is the correct way to create an array?

• int array = int[4];

• new int array = {2,3,4,5};

• int [] array = new int[4]

• int [] array = new int {4}

An array is...

• an object.

• a variable.

• a primitive type.

• a string.

Which would be considered an "element" of the array below?

double [] temp = {1.2, 3.4, 5.6, 7.8};

• double

• temp

• []

• 1.2

Which statement prints out the number 5 for this array:

int [] test = {5,4,3,2,1};

• test[0];

• test[1];

• System.out.println(test[0]);

• System.out.println(test[1]);

How can I traverse an array?

• Using a for loop.

• Using a while loop.

• Using an enhanced for loop.

• Using an if statement.

What would the output be for this code:

int [] array = new int[10];

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

• null

• 0

• 2

• error

Fill in the blank of the for loop so that it traverses the entire array.

• length

• i.length

• names.length()

• names.length

What does this code do?

• access each index of the array

• traverse the array

• access each element of the array

• print the array in reverse

Which is the correct syntax of an enhanced for loop?

• for(int i = 0 : i < array.length)

• for(int i = 0; array)

• for(int i : array)

• for(int [] i : array[])

Predict the output.

• 1 20 23 30 34

• 1 23 34

• 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34

• 20 30 34