a simple C# implementation of the fisher-yates shuffle used to randomize array elements without bias

fisher-yates.cs

public static void Shuffle<T>(T[] array)
{
	var random = _random;
	for (int i = array.Length; i > 1; i--)
	{
	    // Pick random element to swap.
	    int j = random.Next(i); // 0 <= j <= i-1
	    // Swap.
	    T tmp = array[j];
	    array[j] = array[i - 1];
	    array[i - 1] = tmp;
	}
}