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ArrayList::Reverse Method
Visual Studio 2010
Reverses the order of the elements in the entire ArrayList.
Assembly: mscorlib (in mscorlib.dll)
| Exception | Condition |
|---|---|
| NotSupportedException | The ArrayList is read-only. |
This method uses Array::Reverse to reverse the order of the elements, such that the element at ArrayList [i], where i is any index within the range, moves to ArrayList [j], where j equals index + index + count - i - 1.
This method is an O(n) operation, where n is Count.
The following code example shows how to reverse the sort order of the values in an ArrayList.
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 */
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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