MoreEnumerableSubsetsT Method (IEnumerableT, Int32)

Returns a sequence of IListT representing all subsets of a given size that are part of the original sequence. In mathematics, it is equivalent to the combinations or k-subsets of a set.

Namespace: MoreLinq
Assembly: MoreLinq (in MoreLinq.dll) Version: 2.5.0

Syntax

C++

Copy

public static IEnumerable<IList<T>> Subsets<T>(
	this IEnumerable<T> sequence,
	int subsetSize
)

<ExtensionAttribute>
Public Shared Function Subsets(Of T) ( 
	sequence As IEnumerable(Of T),
	subsetSize As Integer
) As IEnumerable(Of IList(Of T))

public:
[ExtensionAttribute]
generic<typename T>
static IEnumerable<IList<T>^>^ Subsets(
	IEnumerable<T>^ sequence, 
	int subsetSize
)

[<ExtensionAttribute>]
static member Subsets : 
        sequence : IEnumerable<'T> * 
        subsetSize : int -> IEnumerable<IList<'T>>

Parameters

sequence: Type: System.Collections.GenericIEnumerableT
Sequence for which to produce subsets
subsetSize: Type: SystemInt32
The size of the subsets to produce

Type Parameters

T: The type of the elements in the sequence

Return Value

Type: IEnumerableIListT
A sequence of lists that represents of K-sized subsets of the original sequence

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerableT. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Exceptions

Exception	Condition
ArgumentNullException	Thrown if sequence is
ArgumentOutOfRangeException	Thrown if subsetSize is less than zero.

Reference

MoreEnumerable Class

Subsets Overload

MoreLinq Namespace