2D Array Quick Check

Which command would make this 2D array?

• int[][] values = new int[3][4];

• int[][] values = new int[4][3];

• int[][] values = new values[3][4];

• int[][] values = int[3][4]

This 2D array is named numbers. Write a command to access the value 5.

This array is named numbers. Which command would add up the top row?

• numbers[0][0] + numbers[0][1] + numbers[0][2]

• numbers[1][0] + numbers[2][0] + numbers[3][0]

• numbers[1][1] + numbers[1][2] + numbers[1][3]

• numbers[1][1] + numbers[2][1] + numbers[3][1]

This array is named numbers. Which command would access the number of columns in the 2D array?

• numbers.length

• numbers.columns

• numbers[0].length

• numbers[0].length-1

This 2D array is named stuff. Which command will access the values {5, 12, 17, 9, 3}?

• stuff[0]

• stuff[0][0]

• stuff

This 2D array is named stuff. What is stuff.length?

• The number of rows (3)

• The number of columns (5)

• The last row (2)

• The last column (4)

What is the output?

• 27

• 46

• 18

• 43

• ArrayIndexOutOfBoundsException

What is the output?

• 27

• 46

• 18

• 34

• ArrayIndexOutOfBoundsException

What is the output?

• 27

• 46

• 18

• 43

• ArrayIndexOutOfBoundsException

The output of code is shown to the left. How will the output change if Line 1 and Line 2 are switched?

• 1 2 3

  4 5 6

• 1 3 5

  2 4 6

• 2 1

  4 3

  6 5

• 5 6

  3 4

  1 2