How to write a program in C# or java of spiral without using array?

1 2 3 4

12 13 14 5

11 16 15 6

10 9 8 7

please help me..

Start with writing a program that does just the first and last line.

Edit: you have to make at least some attempt using your textbook or other materials. If you can't even see how to start then you should drop this class because it's only going to get more difficult from this point.

At least try to do the first line.

How to write a program in C# or java of spiral without using array?

1 2 3 4

12 13 14 5

11 16 15 6

10 9 8 7

please help me..