durstenfeld.cs

public class Durstenfeld<T>
{
  public static void shuffle(T[] array)
  {
      int l = array.Length;
      for (int i = l - 1; i >= 0; i--)
      {
          int j = Random.Range(0, i);
          swap(array, i, j);
      }
  }

  private static void swap(T[] array, int i, int j)
  {
      T el = array[i];
      array[i] = array[j];
      array[j] = el;
  }
}