Question

Write a program to accept a double dimensional array as a parameter and find the sum of the elements of each row.

Answer 1

import java.util.*;
public class DDA2
{
    public void main()
    {
        Scanner sc = new Scanner(System.in);
        int ar[ ][ ] = new int[3][4];
        int r, c;
        System.out.println("Fill the array: ");
        for(r = 0; r < 3; r++)
        {
            for(c = 0; c < 4; c++)
            {
                System.out.print("Cell[" + r + "][" + c + "]: ");
                ar[r][c] = sc.nextInt();
            }
        }
        System.out.println("The array is : ");
        for(r = 0; r < 3; r++)
        {
            for(c = 0; c < 4; c++)
            {
                System.out.print(ar[r][c] + " ");
            }
            System.out.println();
        }
        System.out.println("The Sum of elements of rows : ");
        for(r = 0; r < 3; r++)
        {
            int sum = 0;
            for(c = 0; c < 4; c++)
            {
                sum = sum + ar[r][c];
            }
            System.out.println("Row " + r + " = " + sum);
        }
    }
}

Output:

Fill the array:

Cell[0][0] : 10 
Cell[0][1] : 20 
Cell[0][2] : 30 
Cell[0][3] :15 
Cell[1][0] : 11 
Cell[1][1] : 22 
Cell[1][2] : 44 
Cell[1][3] : 66 
Cell[2][0] : 50 
Cell[2][1] : 52 
Cell[2][2] : 54 
Cell[2][3] : 56
The array is :
10 20 30 15 
11 22 44 66
50 52 54 56
The Sum of elements of rows:
Row 0 = 75 
Row 1 = 143 
Row 2 = 212