ArrayList.Reverse 方法

參考

定義

命名空間:: System.Collections

組件:: mscorlib.dll, System.Collections.NonGeneric.dll

組件:: System.Runtime.dll

組件:: System.Collections.NonGeneric.dll

組件:: System.Runtime.Extensions.dll

組件:: mscorlib.dll

組件:: netstandard.dll

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

反轉 ArrayList 或其中一部分中項目的順序。

多載

Reverse()	反轉整個 ArrayList 中項目的順序。
Reverse(Int32, Int32)	反向指定範圍中項目的順序。

Reverse()

來源:: ArrayList.cs

來源:: ArrayList.cs

來源:: ArrayList.cs

反轉整個 ArrayList 中項目的順序。

public:
 virtual void Reverse();

public virtual void Reverse ();

abstract member Reverse : unit -> unit
override this.Reverse : unit -> unit

Public Overridable Sub Reverse ()

例外狀況

NotSupportedException

ArrayList 為唯讀。

範例

下列程式碼範例示範如何反轉中的 ArrayList 值排序次序。

using namespace System;
using namespace System::Collections;
void PrintValues( IEnumerable^ myList );
int main()
{
   
   // Creates and initializes a new ArrayList.
   ArrayList^ myAL = gcnew ArrayList;
   myAL->Add( "The" );
   myAL->Add( "quick" );
   myAL->Add( "brown" );
   myAL->Add( "fox" );
   myAL->Add( "jumps" );
   myAL->Add( "over" );
   myAL->Add( "the" );
   myAL->Add( "lazy" );
   myAL->Add( "dog" );
   
   // Displays the values of the ArrayList.
   Console::WriteLine( "The ArrayList initially contains the following values:" );
   PrintValues( myAL );
   
   // Reverses the sort order of the values of the ArrayList.
   myAL->Reverse();
   
   // Displays the values of the ArrayList.
   Console::WriteLine( "After reversing:" );
   PrintValues( myAL );
}

void PrintValues( IEnumerable^ myList )
{
   IEnumerator^ myEnum = myList->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      Object^ obj = safe_cast<Object^>(myEnum->Current);
      Console::WriteLine( "   {0}", obj );
   }

   Console::WriteLine();
}

/* 
 This code produces the following output.
 
 The ArrayList initially contains the following values:
    The
    quick
    brown
    fox
    jumps
    over
    the
    lazy
    dog

 After reversing:
    dog
    lazy
    the
    over
    jumps
    fox
    brown
    quick
    The
 */

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

   public static void Main()  {

      // Creates and initializes a new ArrayList.
      ArrayList myAL = new ArrayList();
      myAL.Add( "The" );
      myAL.Add( "quick" );
      myAL.Add( "brown" );
      myAL.Add( "fox" );
      myAL.Add( "jumps" );
      myAL.Add( "over" );
      myAL.Add( "the" );
      myAL.Add( "lazy" );
      myAL.Add( "dog" );

      // Displays the values of the ArrayList.
      Console.WriteLine( "The ArrayList initially contains the following values:" );
      PrintValues( myAL );

      // Reverses the sort order of the values of the ArrayList.
      myAL.Reverse();

      // Displays the values of the ArrayList.
      Console.WriteLine( "After reversing:" );
      PrintValues( myAL );
   }

   public static void PrintValues( IEnumerable myList )  {
      foreach ( Object obj in myList )
         Console.WriteLine( "   {0}", obj );
      Console.WriteLine();
   }
}


/*
This code produces the following output.

The ArrayList initially contains the following values:
   The
   quick
   brown
   fox
   jumps
   over
   the
   lazy
   dog

After reversing:
   dog
   lazy
   the
   over
   jumps
   fox
   brown
   quick
   The
*/

Imports System.Collections

Public Class SamplesArrayList    
    
    Public Shared Sub Main()
        
        ' Creates and initializes a new ArrayList.
        Dim myAL As New ArrayList()
        myAL.Add("The")
        myAL.Add("quick")
        myAL.Add("brown")
        myAL.Add("fox")
        myAL.Add("jumps")
        myAL.Add("over")
        myAL.Add("the")
        myAL.Add("lazy")
        myAL.Add("dog")
        
        ' Displays the values of the ArrayList.
        Console.WriteLine("The ArrayList initially contains the " _
           + "following values:")
        PrintValues(myAL)
        
        ' Reverses the sort order of the values of the ArrayList.
        myAL.Reverse()
        
        ' Displays the values of the ArrayList.
        Console.WriteLine("After reversing:")
        PrintValues(myAL)
    End Sub
    
    Public Shared Sub PrintValues(myList As IEnumerable)
        Dim obj As [Object]
        For Each obj In  myList
            Console.WriteLine("   {0}", obj)
        Next obj
        Console.WriteLine()
    End Sub

End Class


' This code produces the following output.
' 
' The ArrayList initially contains the following values:
'    The
'    quick
'    brown
'    fox
'    jumps
'    over
'    the
'    lazy
'    dog
'
' After reversing:
'    dog
'    lazy
'    the
'    over
'    jumps
'    fox
'    brown
'    quick
'    The

備註

這個方法會使用 Array.Reverse 來反轉元素的順序，讓 ArrayList 位於 [i] 的專案，其中 i 是範圍中的任何索引，移至 ArrayList [j]，其中 j 等於 countindex + index + - i - 1。

這個方法是作業 O(n) ，其中 n 是 Count 。

適用於

Reverse(Int32, Int32)

來源:: ArrayList.cs

來源:: ArrayList.cs

來源:: ArrayList.cs

反向指定範圍中項目的順序。

public:
 virtual void Reverse(int index, int count);

public virtual void Reverse (int index, int count);

abstract member Reverse : int * int -> unit
override this.Reverse : int * int -> unit

Public Overridable Sub Reverse (index As Integer, count As Integer)

參數

index: Int32

要反向範圍內之以零為起始的起始索引。

count: Int32

要反向範圍中的項目數。

例外狀況

ArgumentOutOfRangeException

index 小於零。

-或-

count 小於零。

ArgumentException

index 和 count 不代表 ArrayList 中項目的有效範圍。

NotSupportedException

ArrayList 為唯讀。

範例

下列程式碼範例示範如何反轉中專案 ArrayList 範圍中值的排序次序。

using namespace System;
using namespace System::Collections;
void PrintValues( IEnumerable^ myList );
int main()
{
   
   // Creates and initializes a new ArrayList.
   ArrayList^ myAL = gcnew ArrayList;
   myAL->Add( "The" );
   myAL->Add( "QUICK" );
   myAL->Add( "BROWN" );
   myAL->Add( "FOX" );
   myAL->Add( "jumps" );
   myAL->Add( "over" );
   myAL->Add( "the" );
   myAL->Add( "lazy" );
   myAL->Add( "dog" );
   
   // Displays the values of the ArrayList.
   Console::WriteLine( "The ArrayList initially contains the following values:" );
   PrintValues( myAL );
   
   // Reverses the sort order of the values of the ArrayList.
   myAL->Reverse( 1, 3 );
   
   // Displays the values of the ArrayList.
   Console::WriteLine( "After reversing:" );
   PrintValues( myAL );
}

void PrintValues( IEnumerable^ myList )
{
   IEnumerator^ myEnum = myList->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      Object^ obj = safe_cast<Object^>(myEnum->Current);
      Console::WriteLine( "   {0}", obj );
   }

   Console::WriteLine();
}

/* 
 This code produces the following output.
 
 The ArrayList initially contains the following values:
    The
    QUICK
    BROWN
    FOX
    jumps
    over
    the
    lazy
    dog

 After reversing:
    The
    FOX
    BROWN
    QUICK
    jumps
    over
    the
    lazy
    dog

 */

using System;
using System.Collections;
public class SamplesArrayList1  {

   public static void Main()  {

      // Creates and initializes a new ArrayList.
      ArrayList myAL = new ArrayList();
      myAL.Add( "The" );
      myAL.Add( "QUICK" );
      myAL.Add( "BROWN" );
      myAL.Add( "FOX" );
      myAL.Add( "jumps" );
      myAL.Add( "over" );
      myAL.Add( "the" );
      myAL.Add( "lazy" );
      myAL.Add( "dog" );

      // Displays the values of the ArrayList.
      Console.WriteLine( "The ArrayList initially contains the following values:" );
      PrintValues( myAL );

      // Reverses the sort order of the values of the ArrayList.
      myAL.Reverse( 1, 3 );

      // Displays the values of the ArrayList.
      Console.WriteLine( "After reversing:" );
      PrintValues( myAL );
   }

   public static void PrintValues( IEnumerable myList )  {
      foreach ( Object obj in myList )
         Console.WriteLine( "   {0}", obj );
      Console.WriteLine();
   }
}


/*
This code produces the following output.

The ArrayList initially contains the following values:
   The
   QUICK
   BROWN
   FOX
   jumps
   over
   the
   lazy
   dog

After reversing:
   The
   FOX
   BROWN
   QUICK
   jumps
   over
   the
   lazy
   dog

*/

Imports System.Collections

Public Class SamplesArrayList

    Public Shared Sub Main()

        ' Creates and initializes a new ArrayList.
        Dim myAL As New ArrayList()
        myAL.Add("The")
        myAL.Add("QUICK")
        myAL.Add("BROWN")
        myAL.Add("FOX")
        myAL.Add("jumps")
        myAL.Add("over")
        myAL.Add("the")
        myAL.Add("lazy")
        myAL.Add("dog")

        ' Displays the values of the ArrayList.
        Console.WriteLine("The ArrayList initially contains the following values:")
        PrintValues(myAL)

        ' Reverses the sort order of the values of the ArrayList.
        myAL.Reverse(1, 3)

        ' Displays the values of the ArrayList.
        Console.WriteLine("After reversing:")
        PrintValues(myAL)

    End Sub

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

End Class


' This code produces the following output.
' 
' The ArrayList initially contains the following values:
'    The
'    QUICK
'    BROWN
'    FOX
'    jumps
'    over
'    the
'    lazy
'    dog
'
' After reversing:
'    The
'    FOX
'    BROWN
'    QUICK
'    jumps
'    over
'    the
'    lazy
'    dog

備註

這個方法是作業 O(n) ，其中 n 是 count 。

適用於

ArrayList.Reverse 方法

定義

多載

Reverse()

例外狀況

範例

備註

適用於

Reverse(Int32, Int32)

參數

例外狀況

範例

備註

適用於

意見反應

其他資源