代码:
1 public class Main {
2 public static void main (String [] args) {
3 int sum=1;
4 for(int i=9;i>=1;i--) {
5 sum=2*(sum+1);
6 }
7 System.out.println(sum);
8 }
9 }
代码:
1 public class Main {
2 public static void main (String [] args) {
3 int sum=1;
4 for(int i=9;i>=1;i--) {
5 sum=2*(sum+1);
6 }
7 System.out.println(sum);
8 }
9 }
转载于:https://www.cnblogs.com/fandehui/p/11046209.html