public static T[] Shuffle <T>(this IEnumerable <T> enumerable)
{
T[] arr = enumerable.ToArray();
for (int i = arr.Length - 1; i >= 0; i--)
{
int j = RandomAid.NextInt(i + 1);
T temp = arr[j];
arr[j] = arr[i];
arr[i] = temp;
}
return(arr);
}
private static int Partition <T>(this IList <T> list, Func <T, T, int> comparison, IntRange indices)
{
return(list.Partition(RandomAid.NextInt(indices), comparison, indices));
}