菱形“*”的编写

 1 package com.yzy.test;
 2 
 3 public class Rhombus{
 4     /**
 5      * @param args
 6      */
 7     public static void main(String[] args) {
 8         // TODO Auto-generated method stub
 9         int s = 9;
10         for (int i = 0; i < s; i++) {
11             for (int j = s - i; j > 0; j--) {
12                 System.out.print(" ");
13             }
14             for (int j = 0; j < 2 * i + 1; j++) {
15                 System.out.print("*");
16             }
17             System.out.println();
18         }
19         for (int i = s; i >= 0; i--) {
20             for (int j = 0; j < s - i; j++) {
21                 System.out.print(" ");
22             }
23             for (int j = 0; j < 2 * i + 1; j++) {
24                 System.out.print("*");
25             }
26             System.out.println();
27         }
28     }
29 
30 }