private List <BooksCombo> CalculateCombos(List <Int32> books)
{
List <BooksCombo> combos = new List <BooksCombo>();
for (Int32 i = 1; i <= books.Distinct().Count(); i++)
{
BooksCombo combo = new BooksCombo();
foreach (Int32 book in books)
{
IEnumerable <List <Int32> > groups = combo.GetGroupsThatDoNotContainBook(book);
List <Int32> group = groups.FirstOrDefault(g => g.Count < i);
if (group != null)
{
group.Add(book);
}
else
{
combo.AddBook(book);
}
}
combos.Add(combo);
}
return(combos);
}
private Decimal CalculateComboPrice(BooksCombo combo)
{
Decimal comboPrice = 0;
foreach (List <Int32> books in combo.Groups)
{
Decimal discountFactor = CalculateDiscountFactor(books);
comboPrice += books.Count * singlePrice * discountFactor;
}
return(comboPrice);
}