public List <LuggageRule> ParseRules(List <string> rules)
{
var luggageRules = new List <LuggageRule>();
foreach (var line in rules)
{
var parts = line.Split("bags contain");
var color = parts[0].Trim();
var luggageRule = new LuggageRule(color);
var requiredContent = parts[1].Split(",");
foreach (var requiredBag in requiredContent)
{
if (requiredBag.Contains("no other bags"))
{
continue;
}
var bagParts = requiredBag.Trim(' ').Split(" ");
var requiredBagQuantity = Int32.Parse(bagParts[0]);
var bagColor = bagParts[1] + " " + bagParts[2];
var bagContent = new BagContent(bagColor, requiredBagQuantity);
luggageRule.RequiredContent.Add(bagContent);
}
luggageRules.Add(luggageRule);
}
return(luggageRules);
}
private static List <LuggageRule> GatherRules(IEnumerable <string> data)
{
var rules = new List <LuggageRule>();
foreach (var line in data)
{
rules.Add(LuggageRule.Parse(line));
}
return(rules);
}
private bool SearchForContainingBags(string bagColor, LuggageRule currentRule)
{
foreach (var bag in currentRule.InnerBags)
{
if (bag.Color == bagColor)
{
return(true);
}
return(SearchForContainingBags(bagColor, _luggageRules.Where(r => r.OuterColor == bag.Color).First()));
}
return(false);
}
private void MapInputToLuggageRules(List <string> rawInput)
{
_luggageRules = new List <LuggageRule>();
foreach (var rawRule in rawInput)
{
var splitRule = rawRule.Split("contain");
var newRule = new LuggageRule()
{
OuterColor = splitRule[0].Replace("bags", "").Trim(),
InnerBags = CreateInnerBagsFromRawRule(splitRule[1])
};
_luggageRules.Add(newRule);
}
}
private int CountAllRequiredBagsToEquip(LuggageRule bagRule, List <LuggageRule> rules)
{
if (bagRule.RequiredContent.Count == 0)
{
return(0);
}
var counter = 0;
foreach (var requiredBag in bagRule.RequiredContent)
{
counter += requiredBag.RequiredQuantity;
}
foreach (var requiredBag in bagRule.RequiredContent)
{
var rule = rules.First(r => r.BagColor.Equals(requiredBag.BagColor));
counter += (CountAllRequiredBagsToEquip(rule, rules) * requiredBag.RequiredQuantity);
}
return(counter);
}
