protected virtual string GetBestCards(IEnumerable <string> totalCombination, ICardsComparer comparer)
{
string bestCards = null;
foreach (var cards in totalCombination)
{
if (!comparer.IsValid(cards))
{
continue;
}
if (bestCards == null)
{
bestCards = cards;
continue;
}
var compareResult = comparer.Compare(cards, bestCards);
if (compareResult > 0)
{
bestCards = cards;
}
}
return(bestCards);
}
protected override IEnumerable <int> GetWinnersInternal(ICardsComparer comparer)
{
// omaha rules
// 2 from player cards and 3 from table
// get all possbile player combinations and get higher of them
// compare best combinations between players and select the highest
var bestCardsByPlayer = playersCards
.Select(playerCards => new { Seat = playerCards.Key, BestCards = GetPlayerBestCards(playerCards.Value, comparer) })
.Where(player => player.BestCards != null)
.ToArray();
var bestPlayers = new List <int>();
int? bestPlayerSeat = null;
string bestPlayerCards = null;
foreach (var bestCards in bestCardsByPlayer)
{
if (bestPlayerSeat == null)
{
bestPlayerSeat = bestCards.Seat;
bestPlayerCards = bestCards.BestCards;
bestPlayers.Add(bestCards.Seat);
continue;
}
// compare player best cards to current best cards
var compareResult = comparer.Compare(bestCards.BestCards, bestPlayerCards);
// if player cards are better then clear all best players and reset best cards and seat
if (compareResult > 0)
{
bestPlayers.Clear();
bestPlayerSeat = bestCards.Seat;
bestPlayerCards = bestCards.BestCards;
bestPlayers.Add(bestCards.Seat);
}
else if (compareResult == 0)
{
bestPlayers.Add(bestCards.Seat);
}
}
return(bestPlayers);
}