private Variant OptimizeDiscounts(Variant variant)
{
return variant.Piles.Any(pile => pile.Count == 5) &&
variant.Piles.Any(pile => pile.Count == 3)
? OptimizeDiscounts(Optimize5And3Piles(variant))
: variant;
}
private Variant Optimize5And3Piles(Variant variant)
{
var fiveBooksPile = variant.Piles.First(b => b.Count == 5);
var threeBooksPile = variant.Piles.First(b => b.Count == 3);
var bookToMove = fiveBooksPile.Books.First(b => !threeBooksPile.Books.Contains(b));
fiveBooksPile.Remove(bookToMove);
threeBooksPile.Add(bookToMove);
return variant;
}
public Variant SortBooks(Dictionary<Potter, int> notYetSorted, Variant sortedPerDiscount)
{
var newPile = new Pile(notYetSorted.Select(b => b.Key));
var remain = notYetSorted.Where(b => b.Value > 1).ToDictionary(b => b.Key, b => b.Value - 1);
sortedPerDiscount.Add(newPile);
return remain.Count > 0
? SortBooks(remain, sortedPerDiscount)
: sortedPerDiscount;
}
public bool Equals(Variant variant)
{
if (Piles.Count() != variant.Piles.Count())
{
return false;
}
for (var i = 0; i < _hashes.Count(); i++)
{
if (_hashes[i] != variant._hashes[i])
{
return false;
}
}
return true;
}
