how to change the value of a group of number

Dear All,

I am trying to do the following things but get stuck.

I have one matrice containing:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Every five group, I would like to change with the first five values, so it becomes:

1 2 3 4 5 1 2 3 4 5 1 2 3 4 5

Any tips for that?

Thanks Sypou

Answer 1

[Andrei Bobrov]

a = 1:15
out = rem(a-1,5)+1