private IEnumerable <object> Solver(string inData, bool part1)
{
HashSet <Day12Prog> progFound = new();
List <Day12Prog> progList = new();
Day12Prog prog0 = null;
foreach (var progInfo in inData.Split("\r\n").ToList())
{
progList.Add(new Day12Prog(progInfo.Split(" ")[0].ToInt32()));
}
prog0 = progList.Select(a => a).Where(a => a.ID == 0).First();
foreach (var childProgInfo in inData.Split("\r\n").ToList())
{
var childProgID = childProgInfo.Replace(" ", "").Split("<->")[0].ToInt32();
var childProg = progList.Select(a => a).Where(a => a.ID == childProgID).First();
foreach (var child in childProgInfo.Replace(" ", "").Split("<->")[1].Split(","))
{
childProg.children.Add(progList.Select(a => a).Where(a => a.ID == child.ToInt32()).First());
}
}
int pt1 = CountChildren(prog0, progFound);
var notInList = progList.Except(progFound);
int pt2 = 1; //0 network is the first
while (notInList.Count() != 0)
{
pt2++;
CountChildren(notInList.First(), progFound);
notInList = progList.Except(progFound);
}
yield return(part1? pt1 : pt2);
}
private int CountChildren(Day12Prog start, HashSet <Day12Prog> progFound)
{
foreach (var child in from child in start.children
where !progFound.Contains(child)
select child)
{
progFound.Add(child);
CountChildren(child, progFound);
}
return(progFound.Count);
}