숫자를
1 2 3 4 5
10 9 8 7 6
11 12 13 14 15
20 19 18 17 16
21 22 23 24 25
이렇게 '리을'자 형태로 출력하는 건데요...
제가 짠 for문으로 어떻게 안되나요?
알고리즘을 새로 짜야되나요?
역순으로 도저히 못 바꾸겠네요...

class Q0603_3
{
    public static void main(String[] args) {

                int i,j,num=1;

                for(i=1;i<6;i++) {
                        if(i%2==0) {
                                for(j=1;j<6;j++) {
                                        System.out.printf("%3d",num);
                                        num++;
                                } System.out.println();
                        }
                        else {
                                for(j=1;j<6;j++) {
                                        System.out.printf("%3d",num);
                                        num++;
                                } System.out.println();
                        }
                }
        }
}