Random Number but Don't Repeat

Question

I would like to generate a random number less than 50, but once that number has been generated I would like it so that it cannot be generated again.

Thanks for the h

Answer 1

Seeing as the question was tagged VB/VB.Net... this is a VB implementation of Mitch's answer.

Public Class Utils

   Public Shared Sub ShuffleArray(ByVal items() As Integer)

      Dim ptr As Integer
      Dim alt As Integer
      Dim tmp As Integer
      Dim rnd As New Random()

      ptr = items.Length

      Do While ptr > 1
         ptr -= 1
         alt = rnd.Next(ptr - 1)
         tmp = items(alt)
         items(alt) = items(ptr)
         items(ptr) = tmp
      Loop

   End Sub

End Class