Bud fra igår...

Det er ikke sidste gang vi skal afholde en kode konkurrence som denne - sikke mange gode bud! Fantastisk folkens...

Lad os starte ud med det længste bud som kommer fra Klaus Hebsgaard

 //Klaus Hebsgaard

 public static string GetRandomString( int count )

 {

     Dictionary<int, string> entries = GetList();

     StringBuilder sb = new StringBuilder();

     for( int i = 0; i < count; i++ ) {

         int milli = DateTime.Now.Millisecond;

         string firstMilli = milli.ToString();

         Thread.Sleep( 21 );

         sb.Append( entries[ milli ] );

     }

     return sb.ToString();

 }

 public static Dictionary<int, string> GetList()

 {

     List<string> entries = new List<string>();

     entries.Add( "A" );

     entries.Add( "B" );

     entries.Add( "C" );

     entries.Add( "D" );

     entries.Add( "E" );

     entries.Add( "F" );

     entries.Add( "G" );

     entries.Add( "H" );

     entries.Add( "I" );

     entries.Add( "J" );

     entries.Add( "K" );

     entries.Add( "L" );

     entries.Add( "M" );

     entries.Add( "N" );

     entries.Add( "O" );

     entries.Add( "P" );

     entries.Add( "Q" );

     entries.Add( "R" );

     entries.Add( "S" );

     entries.Add( "T" );

     entries.Add( "U" );

     entries.Add( "V" );

     entries.Add( "X" );

     entries.Add( "Y" );

     entries.Add( "Z" );

     entries.Add( "Æ" );

     entries.Add( "Ø" );

     entries.Add( "Å" );

     entries.Add( "0" );

     entries.Add( "1" );

     entries.Add( "2" );

     entries.Add( "3" );

     entries.Add( "4" );

     entries.Add( "5" );

     entries.Add( "6" );

     entries.Add( "7" );

     entries.Add( "8" );

     entries.Add( "9" );

     List<string> newEntries = new List<string>();

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     newEntries.AddRange( entries );

     return ToDict( newEntries );

 }

 private static Dictionary<int, string> ToDict( List<string> list )

 {

     Dictionary<int, string> dict = new Dictionary<int, string>();

     for( int i = 0; i < list.Count; i++ ) {

         dict.Add( i, list[ i ] );

     }

     return dict;

 }

Også tager vi dem i en lind strøm...

Brian Rasmussesn kom med følgende bud:

 //Brian Rasmussen

 public static string RandomString( uint length )

 {

     var buffer = new char[ length ];

     var timer = new Stopwatch();

     timer.Start();

     for( var i = 0; i < length; i++ ) {

         buffer[ i ] = (char)( 32 + timer.ElapsedTicks % ( length + i ) );

     }

     return new string( buffer );

 }

Også skal vi lige forbi Pernille Poulsen der kom med dette bud:

 static string RandWithoutRand( Int32 length )

 {

     StringBuilder sb = new StringBuilder();

     for( Int32 i = 0; i <= length; i++ ) {

         //Et "tilfældigt" hex-tal trylles frem:

         string hex = Guid.NewGuid().ToString().Substring( 1, 2 );

         //Hexværdien udtrykt i int 16. Tager modulus 25 og lægger 97 til for at få acsii værdierne 97-122 (små bogstaver)

         int hexvalue = ( Convert.ToInt32( hex, 16 ) % 25 ) + 97;

         // Det tilsvarende tegn

         char charValue = (char)hexvalue;

         sb.Append( charValue );

     }

     //og taaa-naaa en tilfældig streng: 

     return sb.ToString();

     // <:O) God jul

 }

Niklas Petersen har skrevet følgende klasse:

 //Niklas Petersen

 public class RandomString

 {

     private const uint a = 1664525;

     private const uint c = 1013904223;

     private const uint m = uint.MaxValue;

     private uint next;

     public RandomString()

     {

         next = (uint)Environment.TickCount;

     }

     private double Rand()

     {

         /* Linear congruential generator */

         next = next * a + c % m;

         return next * ( 1.0 / m );

     }

     public string GetText( int length )

     {

         string t = string.Empty;

         for( int i = 0; i < length; i++ )

             t += (char)( 65 + Rand() * 25 );

         return t;

     }

 }

Og det sidste bud Rasmus Larsen:

 //Rasmus Larsen

 public static string Generate( int length )

 {

     var result = string.Empty;

     var alphabet = "abcdefghijklmnopqrstuvwxyzæøå";

     // Base our randomness on time

     var randomSeed = DateTime.Now.Ticks;

     for( var i = 0; i < length; i++ ) {

         // Generate a random number within the length of the alphabet string.

         var randomNumber = (int)( randomSeed % alphabet.Length );

         result += alphabet[ randomNumber ];

         // "Randomize" our seed and make sure it's positive.

         randomSeed *= 13;

         randomSeed = Math.Abs( randomSeed );

     }

     // Ensure that we don't get the name number of ticks if calling 

     // the function repeatedly. Could use a static integer in the

     // class too, but this is contained within the function.

     Thread.Sleep( 1 );

     return result;

 }

Det er svært at sige hvem der skal vinde den her, så derfor grubler jeg lige et par timer og vender tilbage...