static void Main(string[] args)
{
List <ProgramDefinition> Definitions = new List <ProgramDefinition>();
foreach (string line in FileIterator.Create("input.txt"))
{
string[] halves = line.Split("<->");
int id = int.Parse(halves[0].Trim());
int[] links = halves[1].Trim().Split(',').Select(int.Parse).ToArray();
ProgramDefinition def = Definitions.FirstOrDefault(d => d.Id == id);
if (def == null)
{
def = new ProgramDefinition(id);
Definitions.Add(def);
}
foreach (int link in links)
{
ProgramDefinition lnk = Definitions.FirstOrDefault(d => d.Id == link);
if (lnk == null)
{
lnk = new ProgramDefinition(link);
Definitions.Add(lnk);
}
def.Links.Add(lnk);
}
}
foreach (ProgramDefinition definition in Definitions)
{
if (definition.GroupId == default(Guid))
{
definition.AssignGroups();
}
}
int groups = Definitions.GroupBy(g => g.GroupId).Count();
Console.WriteLine($"The number of groups is {groups}");
Console.ReadKey(true);
}
protected bool Equals(ProgramDefinition other)
{
return(Id == other.Id);
}