C# extension method for shuffling IList collections

public static void Shuffle<T>(this IList<T> list)
{
    int n = list.Count;

    while (n > 1)
    {
        n--;
        int k = Random.Range(0, n+1);

        T value = list[k];
        list[k] = list[n];
        list[n] = value;
    }
}