MoreEnumerablePermutationsT Method

public static IEnumerable<IList<T>> Permutations<T>(
	this IEnumerable<T> sequence
)

<ExtensionAttribute>
Public Shared Function Permutations(Of T) ( 
	sequence As IEnumerable(Of T)
) As IEnumerable(Of IList(Of T))

public:
[ExtensionAttribute]
generic<typename T>
static IEnumerable<IList<T>^>^ Permutations(
	IEnumerable<T>^ sequence
)

[<ExtensionAttribute>]
static member Permutations : 
        sequence : IEnumerable<'T> -> IEnumerable<IList<'T>> 

Parameters

sequence  IEnumerableT

The original sequence to permute.

Type Parameters

T

The type of the elements in the sequence.

Return Value

Usage Note

A permutation is a unique re-ordering of the elements of the sequence.

This operator returns permutations in a deferred, streaming fashion; however, each permutation is materialized into a new list. There are N! permutations of a sequence, where N ⇒ sequence.Count().

Be aware that the original sequence is considered one of the permutations and will be returned as one of the results.

Reference