1 public class LingXing {
2
3
4 public static void main(String[] args) {
5 //打印菱形
6 for (int x=1;x<6;x++){
7 for(int p=x;p<5;p++){
8 System.out.print(" ");
9 }
10 for(int y=0;y<x;y++){
11 System.out.print("* ");
12 }
13
14 System.out.println();
15 }
16 for (int m=5;m>0;m--){
17 for(int p=m;p<=5;p++){
18 System.out.print(" ");
19 }
20 for (int n=1;n<m;n++){
21 System.out.print("* ");
22 }
23 System.out.println();
24 }
1 double t=1;
2 double sum=0;
3 double d=1;
4
5 while (t<=20){
6
7 d*=t;
8 sum+=1/d;
9 t++;
10 System.out.println(1/d);
11 }
12 System.out.println("1+1/2!+...+1/20!="+sum);
13 }
14
15 }
