java迴圈嵌套練習

標籤：

一·二重

(1)輸出結果如下:
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
1 2 3 4 5 6
1 2 3 4 5 6 7
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8 9

public class Test {    public static void main(String[] args){        int i,j,;        for(i = 1;i <= 9;i++){            for(j = 1;j <= i;j++){                System.out.print(j);            }            System.out.println();        }    }}

(2)輸出結果如下:

9 8 7 6 5 4 3 2 1
8 7 6 5 4 3 2 1
7 6 5 4 3 2 1
6 5 4 3 2 1
5 4 3 2 1
4 3 2 1
3 2 1
2 1
1

(3)

1 2 3 4 5 6

1 2 3 4 5

1 2 3 4

1 2 3

1 2

1

public class Test {    public static void main(String[] args){        int i,j,m,n;        for(i = 1;i <= 6;i++){            for(j = 1;j + i <= 7;j++){                System.out.print(j);            }            System.out.println();        }    }}

 二·三重

public class He {    public static void main(String[] args){        int i,j,m;        for(i = 1;i <= 6;i++){            for(j = 1;j + i <= 6;j++){                System.out.print(" ");            }            for(m = i;m > 0;m--){            System.out.print(m);            }            System.out.println(" ");        }            }}

 

java迴圈嵌套練習