[R] permutate elements in a vector
bhh at xs4all.nl
Thu Dec 1 14:05:58 CET 2011
> Hi all,
> I have a vector, e.g., A = c(10, 20, 30, 40). This 4 numbers have 4! = 24
> different combination. I want to generate a matrix with one combination in
> one row, so the output would be
> B =
> 10 20 30 40
> 10 40 20 30
> Does anyone know how to do this easily in R? Thank you very much.
You want permutations not combinations.
permutations(4) * 10
A <- 10*(1:4)
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