for语句输出三角形

 1 public class yuju {
 2 
 3     public static void main(String[] args) {
 4     
 5          for (int i= 0; i<10; i++)
 6             {
 7                  for (int j=0; j<=i;j++)
 8                  {
 9                      System.out.print("*");
10             }
11                 System.out.println();
12             }
13          
14 
15             for (int i=0;i<10;i++)
16             {
17            for (int j=8;j>=i;j--)
18            {
19                System.out.print("*");
20            }
21            System.out.println();
22             }
23 
24     }
25 
26 }