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Reverse of a string without using the Reverse function in C# and VB

, 25 Jul 2011 CPOL 3.2K
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/// /// Reverses an array (Change the type or use SetItem)/// /// The bytes/// The index in the bytes/// The length of bytes to reverseinternal static void Reverse(char[] array, int...
/// <summary>
/// Reverses an array (Change the type or use SetItem)
/// </summary>
/// <param name="array">The bytes</param>
/// <param name="index">The index in the bytes</param>
/// <param name="len">The length of bytes to reverse</param>
internal static void Reverse(char[] array, int index, int len)
    char temp;//Comment out when using XOR Swap
    //Length = 5 => {0,4}, {1,3}, ? {2,2} never hit because !(near < far)
    for (int near = index, far = len - 1; near < far; ++near, --far)
        temp = array[near]; //          array[near] ^= array[far];
        array[near] = array[far];//          array[far] ^= array[near];
        array[far] = temp;//          array[near] ^= array[far];
internal static void Reverse(char[] array)
   Reverse(array, 0, array.Length);
internal static String Reverse(String theString)
   char[] array = theString.ToCharArray();
   Reverse(array, 0, array.Length);
   return new String(array);


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


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Livin in a lonely world, caught the midnight train going anywhere... Only thing is it was a runaway train... and it ain't ever goin back...

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