The Shuffle command applies a random permutation to X.

The first parameter X is a data sample which must be given as a one-dimensional Array, a Vector, or a list.

An option  or  can be specified as a second argument. With , Shuffle will change X in place if it is an Array or a Vector; with , Shuffle will return a new (shuffled) copy of X. If X is a list, then Shuffle returns a new copy either way. The default is .

The option  can be abbreviated to .

The Shuffle command accepts non-numeric data.