Java programming

Given a number N, create a 2D arrays with n rows and n columns. Now inspect the matrix pattern below and come up with a formula to populate the array for any give NXN matrix.

5 4 3 2 1

10 8 6 4 2

15 12 9 6 3

20 16 12 8 4

25 20 15 10 5

Sample Run1

Enter a number (N): 5

Output1:

5 4 3 2 1

10 8 6 4 2

15 12 9 6 3

20 16 12 8 4

25 20 15 10 5

Sample Run2

Enter a number (N): 3

Output2:

3 2 1

6 4 2

9 6 3