小编use*_*776的帖子

Scanner x = new Scanner(System.in);
byte num, r, c;
System.out.print("Enter a number: ");
num = x.nextByte();
for (r = 1; r <= num; r++) {
    for (c = 1; c <= r; c++) {
        System.out.print("*");
    }
    System.out.println();
}

示例输出:

Enter a number: 4
*
**
***
****

如何更改输出:

*
**
***
****

至

****
***
**
*