void RandomData(int amount, ArrayList alis, List <Book> list, Printed_Edition[] arr, CollectionType <Book> collection)
{
Random r = new Random();
for (int i = 0; i < amount; i++)
{
Book p = new Book();
p.Price = r.Next(0, Int32.MaxValue) / 100;
alis.Add(p);
list.Add(new Book());
arr[i] = new Book();
collection.Add(new Book());
list[i].Price = r.Next(0, Int32.MaxValue) / 100;
arr[i].Price = r.Next(0, Int32.MaxValue) / 100;
collection[i].Price = r.Next(0, Int32.MaxValue) / 100;
}
}