permute {crank}

Permute a vector.

Description

Permute the values contained in a vector.

Usage

 permute(x)

Arguments

x

The vector of values that are to be permuted.

Details

‘⁠permute⁠’ calculates the number of permutations and creates a matrix with that number of rows. It fills the first column with the elements of ‘⁠x⁠’ in groups large enough to cover the permutations of a vector with one less value. It then fills the remaining columns by calling itself with all values except the one in the first row of the current block. If ‘⁠x⁠’ has only two values, it returns the trivial permutation of ‘⁠x⁠’ and its reverse.

Value

A matrix in which each row is a permutation of the values in ‘⁠x⁠’.

Author(s)

Jim Lemon

See Also

fillArows, fillArow

Examples

 permute(c(5,8,3,9))