public void DoShuffle()
{
// Remove 3 cup next to actual
var nextCup1 = actualCup.NextCup;
var nextCup2 = nextCup1.NextCup;
var nextCup3 = nextCup2.NextCup;
actualCup.NextCup = nextCup3.NextCup;
// Find destination cup: actual minus one value
var searchedCupNo = actualCup.CupNo - 1;
if (searchedCupNo < lowestValueOnAnyCup)
{
searchedCupNo = highestValueOnAnyCup;
}
while (searchedCupNo == nextCup1.CupNo || searchedCupNo == nextCup2.CupNo || searchedCupNo == nextCup3.CupNo)
{
searchedCupNo--;
if (searchedCupNo < lowestValueOnAnyCup)
{
searchedCupNo = highestValueOnAnyCup;
}
}
// Put removed cups to place
var destinationCup = cupsList[searchedCupNo];
var destinationOriginalNextCup = destinationCup.NextCup;
destinationCup.NextCup = nextCup1;
nextCup3.NextCup = destinationOriginalNextCup;
// Step actual cup one
actualCup = actualCup.NextCup;
}
public static int[] Play(
string start,
int rounds,
int totalCups = 9)
{
var cups = new Dictionary <int, Cup>();
cups[start[0] - '0'] = new Cup(start[0] - '0');
for (var i = 1; i < start.Length; i++)
{
cups[start[i - 1] - '0'].Next = cups[start[i] - '0'] = new(start[i] - '0');
}
if (start.Length < totalCups)
{
cups[start[^ 1] - '0'].Next = cups[start.Length + 1] = new Cup(start.Length + 1);
public CrabGame(IEnumerable <int> cupsNumbers)
{
highestValueOnAnyCup = cupsNumbers.Max();
lowestValueOnAnyCup = 1;
cupsList = new Cup[highestValueOnAnyCup + 1];
var startCup = new Cup(cupsNumbers.First());
cupsList[startCup.CupNo] = startCup;
var previousCup = startCup;
foreach (var cupsNumber in cupsNumbers.Skip(1))
{
var newCup = new Cup(cupsNumber);
cupsList[newCup.CupNo] = newCup;
previousCup.NextCup = newCup;
previousCup = newCup;
}
previousCup.NextCup = startCup;
actualCup = startCup;
}