public string CupsAfterOne()
{
int[] list = new int[8];
var iOne = Cups.IndexOf(1) + 1;
for (int i = 0; i < list.Length; i++)
{
int idx = (iOne + i) % 9;
list[i] = Cups[idx];
}
string val = string.Join("", list.Select(i => i.ToString()).ToArray());
return(val);
}
public int FindDestination(int maxValue)
{
int destCup = CurrentCup;
do
{
destCup--;
if (destCup < 1)
{
destCup = maxValue;
}
} while (Cups.IndexOf(destCup) == -1);
return(destCup);
}
public void Play(int until = 10)
{
for (int move = 1; move <= until; move++)
{
if (PRINT)
{
Console.WriteLine($"-- move {move} --");
}
if (PRINT)
{
PrintCups();
}
// the current cup
int currentCup = Cups[CurrcentCupIndex];
// pick up the three cups that are immediately clockwise of the current cup
List <int> cupsInHand = PickupCups();
// select a destination cup. the cup with a label equal to the current cup's label minus one
// can only be on the board to search. if not found lowest, go up and search from the highest again
int destinationCup = SelectDestinationCup(currentCup);
// insert the cup from the hands in the right position after the destination cup
var destinationCupIndex = Cups.IndexOf(destinationCup);
Cups.InsertRange(destinationCupIndex + 1, cupsInHand);
// make sure the holden cup is at the same index as before! otherwise shift everything
while (currentCup != Cups[CurrcentCupIndex])
{
var firstCup = Cups.FirstOrDefault();
Cups.RemoveAt(0);
Cups.Add(firstCup);
}
// select a new current cup, the cup which is immediately clockwise of the current cup
CurrcentCupIndex = GetNextCupIndex(CurrcentCupIndex);
}
if (PRINT)
{
Console.WriteLine($"-- final --");
}
if (PRINT)
{
PrintCups();
}
}
public int[] Extract3Cups()
{
var idx = Cups.IndexOf(CurrentCup);
int[] cups3 = new int[3];
var count = (Cups.Count - (idx + 1)) >= 3 ? 3 : (Cups.Count - (idx + 1));
Cups.CopyTo(idx + 1, cups3, 0, count);
Cups.RemoveRange(idx + 1, count);
if (count < 3)
{
count = 3 - count;
Cups.CopyTo(0, cups3, 3 - count, count);
Cups.RemoveRange(0, count);
}
return(cups3);
}
protected List <int> PickupCups()
{
var indexesToPick = new List <int>()
{
0, 1, 2
}.Select(i => GetNextCupIndex(CurrcentCupIndex + i)).ToList();
var cupsToPickUp = indexesToPick.Select(i => Cups[i]).ToList();
if (PRINT)
{
Console.WriteLine($"pick up: {String.Join(", ", cupsToPickUp)}");
}
// remove the cups from the circle
foreach (var cupToRemove in cupsToPickUp)
{
var index = Cups.IndexOf(cupToRemove);
Cups.RemoveAt(index);
}
return(cupsToPickUp);
}
public void UpdateCurrentCup()
{
var idx = Cups.IndexOf(CurrentCup) + 1;
CurrentCup = (idx < Cups.Count) ? Cups[idx] : Cups[0];
}
public void InsertCups(int[] cups3, int destCup)
{
Cups.InsertRange(Cups.IndexOf(destCup) + 1, cups3);
}