How to solve this question ? Code needed (java)

Question

1 2 3 4 5
10 9 8 7 6
11 12 13 14 15 ( I wish the code could also be a simple one).
20 19 18 17 16
21 22 23 24 25

Answer 1

Try to search the Code section for examples

Answer 2

for (int x=1; x<=25; x++) System.out.format(x%5==0?"%d\n":"%d ",x);