利用亂數產生兩個二維陣列A,B計算出C=A*B

code

package javahomework;

public class HW08 {
 public static void main(String arg[]) {
  int a[][] = new int[2][2];
  int b[][] = new int[2][2];
  int c[][] = new int[2][2];
  for (int i = 0; i < a.length; i++)
   for (int j = 0; j < a[i].length; j++)
    a[i][j] = (int) (Math.random() * 10);
  for (int i = 0; i < b.length; i++)
   for (int j = 0; j < b[i].length; j++)
    b[i][j] = (int) (Math.random() * 10);
  for (int i = 0; i < a.length; i++)
   for (int j = 0; j < b[i].length; j++)
    for (int k = 0; k < b[j].length; k++)
     c[i][j] = c[i][j] + a[i][k] * b[k][j];

  for (int i = 0; i < c.length; i++) {
   for (int j = 0; j < c[i].length; j++)
    System.out.print(c[i][j] + " ");
   System.out.print("\n");
  }
 }
}