Algorithms..::..RandomSubset<(Of <(<'T>)>)> Method (IEnumerable<(Of <(<'T>)>)>, Int32)
Picks a random subset of count items from collection, and places
those items into a random order. No item is selected more than once.
Namespace:
Wintellect.PowerCollections
Assembly:
PowerCollections (in PowerCollections.dll)
Syntax
public static T[] RandomSubset<T>( IEnumerable<T> collection, int count )
Public Shared Function RandomSubset(Of T) ( _ collection As IEnumerable(Of T), _ count As Integer _ ) As T()
public: generic<typename T> static array<T>^ RandomSubset( IEnumerable<T>^ collection, int^ count )
Type Parameters
- T
- The type of items in the collection.
Parameters
- collection
- Type: IEnumerable<(Of <(<'T>)>)>
The collection of items to select from. This collection is not changed.
- count
- Type: Int32
The number of items in the subset to choose.
Return Value
An array of count items, selected at random from collection.Exceptions
| Exception | Condition |
|---|---|
| ArgumentOutOfRangeException | count is negative or greater than collection.Count. |