private static int CountContainedBags(int count, BagSpec bag)
{
foreach (var b in bag.PossibleContents)
{
count += CountContainedBags(1, b) * bag.Quantities[b];
}
return(count);
}
private static void AddPossibleContents(BagSpec bagSpec, string contents)
{
if (contents == "no other bags")
{
return;
}
var items = contents.Split(",").Select(s => s.Trim());
foreach (var item in items)
{
var groups = ContentsPattern.Match(item).Groups;
var quantity = Convert.ToInt32(groups[1].ToString());
var colour = groups[2].ToString();
var spec = GetOrCreateBagSpec(colour);
bagSpec.AddPossibleContents(quantity, spec);
}
}
private static BagSpec GetOrCreateBagSpec(string colour)
{
BagSpec spec;
var candidates = BagSpecs.Where(b => b.Colour == colour);
if (candidates.Any())
{
spec = candidates.First();
}
else
{
spec = new BagSpec
{
Colour = colour
};
BagSpecs.Add(spec);
}
return(spec);
}
public void AddPossibleContents(int quantity, BagSpec spec)
{
PossibleContents.Add(spec);
Quantities[spec] = quantity;
}