Given a vector of dimension 5, use it to create an 5-by-5 circulant matrix. An example of circulant matrix:
1 5 4 3 2
2 1 5 4 3
3 2 1 5 4
4 3 2 1 5
5 4 3 2 1
5 integers.
The 5-by-5 circulant matrix. Every element is followed by space and don't forget to change line in the end each row even in the last.