public NineNode(long value, NineNode ccw, NineNode cw)
{
Value = value;
CCW = ccw ?? this;
CW = cw ?? this;
CW.CCW = this;
CCW.CW = this;
}
public void PartOne(int elfCount, long marbleMaxIdx)
{
var solution = String.Empty;
NineNode iter = new NineNode(0, null, null);
List <long> players = Enumerable.Range(0, elfCount).Select(x => (long)0).ToList();
var playerIdx = 0;
//16458525
for (var i = 1; i <= marbleMaxIdx; i++)
{
if ((i % 23) == 0)
{
for (var j = 0; j < 7; j++)
{
iter = iter.CCW;
}
var toRemove = iter;
iter = toRemove.CW;
iter.CCW = toRemove.CCW;
toRemove.CCW.CW = iter;
players[playerIdx] += toRemove.Value + i;
}
else
{
var one = iter.CW;
var two = one.CW;
iter = new NineNode(i, one, two);
}
playerIdx += 1;
if (playerIdx == elfCount)
{
playerIdx = 0;
}
}
solution = players.Max().ToString();
//System.Windows.Forms.Clipboard.SetText(solution.ToString());
Console.WriteLine("Day Nine: " + solution);
}
