2015/12/29 eclipse应用 输出三角形

 1 public class Myfirst {
 2 
 3     
 4     public static void main(String[] args) {
 5             System.out.println("hello world");
 6             System.out.println("");
 7             System.out.println("□□□□□□□"); 
 8             System.out.println("■■■□■■■");
 9             System.out.println("■■■□■■■");
10             System.out.println("□□□□□□□");
11             System.out.println("■■■□■■■");
12             System.out.println("■■■□■■■");
13             System.out.println("□□□□□□□");
14             System.out.println("");
15             System.out.println("▼▲▼▲▼"); 
16             System.out.println(" ▼▲▼▼");
17             System.out.println("  ▼▲▼");
18             System.out.println("   ▼▼");
19             System.out.println("    ▼");
20         
21             
22     }
23     }