Question

Fill an array (type int, size 10).

Print the average of all the elements.

Answer 1

import java.util.*;
class clArrays
{
    void main()
    {
        Scanner sc = new Scanner(System.in);
        int R[] = new int[10];        
        System.out.println("Enter 10 elements for the array : ");
        for(int j = 0; j <= 9; j++)
        {
            System.out.print("Fill cell number " + j + " : ");
            R[j] = sc.nextInt();
        }        
        //calculating sum and average
        int sum = 0; double avg = 0.0;
        for(int j = 0; j <= 9; j++)
        {
            sum = sum + R[j];
        }        
        avg = (double) sum/10;
        System.out.print(" Average of the array elements: " + avg);
    }
}

Output:

Enter 10 elements for the array :
Fill cell num 0: 55
Fill cell num 1 : 66
Fill cell num 2 : 44
Fill cell num 3 : 33
Fill cell num 4 : 99
Fill cell num 5: 77
Fill cell num 6 : 88
Fill cell num 7: 11
Fill cell num 8 : 22
Fill cell num 9: 101
Average of the array elements : 59.0