Q91

given the code fragment:

             int[][] array2d = new int[2][3];

             System.out.println("Loading the data.");

             for (int x = 0; x < array2d.length; x++) {

                    for (int y = 0; y < array2d[0].length; y++) {

                          System.out.println(" x = " + x);

                          System.out.println(" y = " + y);

                          // insert load statement here.

                    }

             }

             System.out.println("Modify the data. ");

             for (int x = 0; x < array2d.length; x++) {

                    for (int y = 0; y < array2d[0].length; y++) {

                          System.out.println(" x = " + x);

                          System.out.println(" y = " + y);

                          // insert modify statement here.

                    }

             }

Which pair of load and modify statement should be inserted in the code? The load statement should set the array’s x row and y column value to the sum of x and y
The modify statement should modify the array’s x row and y column value by multiplying it by 2

A.
Load statement: array2d(x,y) = x + y; Modify statement: array2d(x,y) = array2d(x,y) * 2

B.
Load statement: array2d[x y] = x + y; Modify statement: array2d[x y] = array2d[x y] * 2

C.
Load statement: array2d[x,y] = x + y; Modify statement: array2d[x,y] = array2d[x,y] * 2

D.
Load statement: array2d[x][y] = x + y; Modify statement: array2d[x][y] = array2d[x][y] * 2

E.
Load statement: array2d[[x][y]] = x + y; Modify statement: array2d[[x][y]] = array2d[[x][y]] * 2

La risposta è D. Le due modifiche sono :

array2d[x][y]=(x+y);

array2d[x][y]=(2*array2d[x][y]);