C# Array Reverse(Array, Int32, Int32)

Description

Array Reverse(Array, Int32, Int32) reverses the sequence of the elements in a range of elements in the one-dimensional Array.

Syntax

Array.Reverse(Array, Int32, Int32) has the following syntax.


public static void Reverse(
  Array array,/*from   ww w . j  ava2  s  .co m*/
  int index,
  int length
)

Parameters

Array.Reverse(Array, Int32, Int32) has the following parameters.

array - The one-dimensional Array to reverse.
index - The starting index of the section to reverse.
length - The number of elements in the section to reverse.

Returns

Array.Reverse(Array, Int32, Int32) method returns

Example

The following code example shows how to reverse the sort of the values in a range of elements in an Array.


using System;/*from ww  w  . j  a v  a 2 s . c o  m*/
public class SamplesArray  {

   public static void Main()  {

      // Creates and initializes a new Array.
      Array myArray=Array.CreateInstance( typeof(String), 9 );
      myArray.SetValue( "A", 0 );
      myArray.SetValue( "B", 1 );
      myArray.SetValue( "2", 2 );
      myArray.SetValue( "3", 3 );
      myArray.SetValue( "Q", 4 );
      myArray.SetValue( "V", 5 );
      myArray.SetValue( "R", 6 );
      myArray.SetValue( "A", 7 );
      myArray.SetValue( "D", 8 );

      Console.WriteLine( "The Array initially contains the following values:" );
      PrintIndexAndValues( myArray );

      Array.Reverse( myArray, 1, 3 );

      PrintIndexAndValues( myArray );
   }


   public static void PrintIndexAndValues( Array myArray )  {
      for ( int i = myArray.GetLowerBound(0); i <= myArray.GetUpperBound(0); i++ )
         Console.WriteLine( "\t[{0}]:\t{1}", i, myArray.GetValue( i ) );
   }
}

The code above generates the following result.