Question

Write the declaration statement for a two-dimensional array X of integers with five rows and five columns that accepts 25 integers from the user.

Answer 1

Answer:

int[ ][ ] X = new int[5][5];

It can also be declared and initialized this way:

  int[][] X = {

               {1,2,3,6,8},

               {4, 5, 6, 9},

               {7,5,6,8,9},

               {8,5,8,8,9},

               {10,2,6,8,11},

       };

Explanation:

Above is a declaration of a two-dimensional array that can hold 5*5=25 int values. A java program is given below:

public class JavaTwoD{

   public static void main(String args[ ]) {

       // creating the 5X5 array

       int[ ][ ] X = new int[5][5];

       // looping through the array to add elements

       for (int i = 0; i < X.length; i++) {

           for (int j = 0; j < X[i].length; j++) {

               X[i][j] = i * j;

           }

       }