public void AddRequirement(Chemical chemical, int amount)
{
if (requirements.ContainsKey(chemical))
{
requirements[chemical] += amount;
}
else
{
requirements.Add(chemical, amount);
}
}
private Chemical GetOrAddChemical(string id)
{
Chemical chemical = null;
if (availableChemicals.ContainsKey(id))
{
chemical = availableChemicals[id];
}
else
{
chemical = new Chemical(id);
availableChemicals.Add(id, chemical);
}
return(chemical);
}
public override void Initialize()
{
base.Initialize();
availableChemicals = new Dictionary <string, Chemical>();
// Add additional space for regex
for (int i = 0; i < lines.Length; i++)
{
lines[i] = " " + lines[i];
}
Regex searchExpression = new Regex(@"( \d* )(\w*)", RegexOptions.Compiled);
for (int i = 0; i < lines.Length; i++)
{
MatchCollection collection = searchExpression.Matches(lines[i]);
Chemical chemical = null;
Chemical requiredChemical = null;
for (int j = collection.Count - 1; j >= 0; j--)
{
Match match = collection[j];
string id = match.Groups[2].ToString();
int amount = int.Parse(match.Groups[1].ToString());
if (j == collection.Count - 1)
{
chemical = GetOrAddChemical(id);
chemical.SetDefaultQuantity(amount);
}
else
{
requiredChemical = GetOrAddChemical(id);
chemical.AddRequirement(requiredChemical, amount);
}
}
}
Debug();
}
public override string GetSolution()
{
Chemical ore = availableChemicals["ORE"];
Chemical fuel = availableChemicals["FUEL"];
long fuelAmount = 0;
while (true)
{
fuel.Produce(1);
if (ore.AvailableAmount > 1000000000000)
{
break;
}
fuelAmount++;
}
return(fuelAmount.ToString());
}