HW7.18

 1 public class Solution
 2 {
 3     public static void main(String[] args)
 4     {
 5         int[][] m = {{1, 2}, {3, 4}, {5, 6}, {7, 8}, {9, 10}};
 6 
 7         shuffle(m);
 8 
 9         for(int i = 0; i < m.length; i++)
10         {
11             for(int j = 0; j < m[0].length; j++)
12                 System.out.print(m[i][j] + " ");
13             System.out.println();
14         }
15     }
16 
17     public static void shuffle(int[][] array)
18     {
19         for(int i = 0; i < array.length; i++)
20         {
21             int randomLocation = (int)(Math.random() * array.length);
22             int[] temp = new int[array[0].length];
23             for(int j = 0; j < array[0].length; j++)
24             {
25                 temp[j] = array[i][j];
26                 array[i][j] = array[randomLocation][j];
27                 array[randomLocation][j] = temp[j];
28             }
29         }
30     }
31 }