Java入门之循环练习

1、打印九九乘法表

1     public static void main(String[] args) {
2         for(int i = 1; i <= 9; i++){
3             for(int j = 1; j <= i; j++){
4                 int result = i * j;
5                 System.out.print("" + j + "*" + i + "=" + result + "  ");
6             }
7             System.out.println();
8         }
9     }

 

 

 

2、打印三角形

 1     public static void main(String[] args) {
 2         for (int i = 1; i <= 5; i++) {
 3             for (int j = 5; j >= i; j--){
 4                 System.out.print(" ");
 5             }
 6             for (int k = 1; k <= i; k++){
 7                 System.out.print("*");
 8             }
 9             for (int t = 1; t < i; t++){
10                 System.out.print("*");
11             }
12             System.out.println();
13         }
14     }

 

posted @ 2022-07-12 14:44  嗒嗒媛  阅读(16)  评论(0)  编辑  收藏  举报