permute: Generate all permutations of input
In jackwasey/jwutil: Tools for Data Manipulation and Testing

Description Usage Arguments Details Value Examples

Systematically permute the input vector or list, which is very slow for long x. Am amazed something this simple isn't either in base R, or in a straightforward form in a package.

1	permute(x)

`x`	list or vector

TODO: limit to a certain cut-off, after which we randomly sample

data frame, each row being one permutation

ltr <- c("a", "b", "c", "d")
x <- permute(ltr)
print(x)
stopifnot(nrow(x) == factorial(length(ltr)))
ltr <- c("a", "b", "b")
x <- permute(ltr)
print(x)
stopifnot(nrow(x) == factorial(length(ltr)))