Array in Java

Which of the following is advantage of java array?

• Code Optimization

• Random access

• Size No-Limit

• Both A and B

 In java, array elements are stored in ________ memory locations.

• Random

• Sequential

• Sequential & Random

• Binary search

What will be output for the following code?

class array_output

{ public static void main(String args[])

{ int array_variable[][] = {{ 1, 2, 3}, { 4 , 5, 6}, { 7, 8, 9}};

int sum = 0;

for (int i = 0; i < 3; ++i)

for (int j = 0; j < 3 ; ++j)

sum = sum + array_variable[i][j];

System.out.print(sum / 5); } }

• 8

• 9

• 10

• 11

How to sort an array?

• Array.sort()

• Arrays.sort()

• Collection.sort()

• System.sort()

How to copy contents of array?

• System.arrayCopy()

• Array.copy()

• Arrays.copy()

• Collection.copy()