ArrayList.Repeat(Object, Int32) Methode

Definition

Namespace:
System.Collections
Assemblys:
mscorlib.dll, System.Collections.NonGeneric.dll
Assemblys:
netstandard.dll, System.Runtime.dll
Assembly:
System.Collections.NonGeneric.dll
Assembly:
System.Runtime.Extensions.dll
Assembly:
mscorlib.dll
Assembly:
netstandard.dll
Quelle:
ArrayList.cs
Quelle:
ArrayList.cs
Quelle:
ArrayList.cs
Quelle:
ArrayList.cs
Quelle:
ArrayList.cs

Gibt einen ArrayList Wert zurück, dessen Elemente Kopien des angegebenen Werts sind.

public:
 static System::Collections::ArrayList ^ Repeat(System::Object ^ value, int count);
public static System.Collections.ArrayList Repeat(object value, int count);
public static System.Collections.ArrayList Repeat(object? value, int count);
static member Repeat : obj * int -> System.Collections.ArrayList
Public Shared Function Repeat (value As Object, count As Integer) As ArrayList

Parameter

value
Object

Das Object zu kopierende Element mehrmals im neuen ArrayList. Der Wert kann sein null.

count
Int32

Die Anzahl der Kopierten value .

Gibt zurück

ArrayList

Eine ArrayList Mit count der Anzahl der Elemente, die alle Kopien von value.

Ausnahmen

ArgumentOutOfRangeException

count ist kleiner als 0 (null).

Beispiele

Im folgenden Codebeispiel wird gezeigt, wie Sie ein Neues ArrayList mit demselben Wert erstellen und initialisieren.

using System;
using System.Collections;
public class SamplesArrayList  {

   public static void Main()  {

      // Creates a new ArrayList with five elements and initialize each element with a null value.
      ArrayList myAL = ArrayList.Repeat( null, 5 );

      // Displays the count, capacity and values of the ArrayList.
      Console.WriteLine( "ArrayList with five elements with a null value" );
      Console.WriteLine( "   Count    : {0}", myAL.Count );
      Console.WriteLine( "   Capacity : {0}", myAL.Capacity );
      Console.Write( "   Values:" );
      PrintValues( myAL );

      // Creates a new ArrayList with seven elements and initialize each element with the string "abc".
      myAL = ArrayList.Repeat( "abc", 7 );

      // Displays the count, capacity and values of the ArrayList.
      Console.WriteLine( "ArrayList with seven elements with a string value" );
      Console.WriteLine( "   Count    : {0}", myAL.Count );
      Console.WriteLine( "   Capacity : {0}", myAL.Capacity );
      Console.Write( "   Values:" );
      PrintValues( myAL );
   }

   public static void PrintValues( IEnumerable myList )  {
      foreach ( Object obj in myList )
         Console.Write( "   {0}", obj );
      Console.WriteLine();
   }
}
/*
This code produces the following output.

ArrayList with five elements with a null value
   Count    : 5
   Capacity : 16
   Values:
ArrayList with seven elements with a string value
   Count    : 7
   Capacity : 16
   Values:   abc   abc   abc   abc   abc   abc   abc

*/

Imports System.Collections

Public Class SamplesArrayList    

    Public Shared Sub Main()

        ' Creates a new ArrayList with five elements and initialize each
        ' element with a null value.
        Dim myAL As ArrayList = ArrayList.Repeat(Nothing, 5)

        ' Displays the count, capacity and values of the ArrayList.
        Console.WriteLine("ArrayList with five elements with a null value")
        Console.WriteLine("   Count    : {0}", myAL.Count)
        Console.WriteLine("   Capacity : {0}", myAL.Capacity)
        Console.Write("   Values:")
        PrintValues(myAL)

        ' Creates a new ArrayList with seven elements and initialize each
        ' element with the string "abc".
        myAL = ArrayList.Repeat("abc", 7)

        ' Displays the count, capacity and values of the ArrayList.
        Console.WriteLine("ArrayList with seven elements with a string value")
        Console.WriteLine("   Count    : {0}", myAL.Count)
        Console.WriteLine("   Capacity : {0}", myAL.Capacity)
        Console.Write("   Values:")
        PrintValues(myAL)

    End Sub

    Public Shared Sub PrintValues(myList As IEnumerable)
        Dim obj As [Object]
        For Each obj In  myList
            Console.Write("   {0}", obj)
        Next obj
        Console.WriteLine()
    End Sub

End Class


' This code produces the following output.
' 
' ArrayList with five elements with a null value
'    Count    : 5
'    Capacity : 16
'    Values:					
' ArrayList with seven elements with a string value
'    Count    : 7
'    Capacity : 16
'    Values:	abc	abc	abc	abc	abc	abc	abc

Hinweise

ArrayList akzeptiert null als gültigen Wert und lässt doppelte Elemente zu.

Bei dieser Methode handelt es sich um einen Vorgang, bei dem O(n) es sich um einen n Vorgang handeltcount.

Gilt für: