public static RoyalFlush TryGetRoyalFlush(Card[] cards)
{
if (cards.First().CardNomination.Is(MajorCardType.Ace) && TryGetStraightFlush(cards) != null)
return new RoyalFlush();
return null;
}
public static Flush TryGetFlush(Card[] cards)
{
var first = cards.First();
return cards.Skip(1).All(c => c.Suit == first.Suit)
? new Flush(cards.Select(c => c.CardNomination).ToArray())
: null;
}
public static Flush TryGetFlush(Card[] cards)
{
return cards.Skip(1).Aggregate(
new {Flush = true, cards.First().Suit},
(acc, card) => new { Flush = acc.Flush && acc.Suit == card.Suit, card.Suit }
).Flush
? new Flush(cards.Select(c => c.CardNomination).ToArray())
: null;
}
public static Straight TryGetStraight(Card[] cards)
{
var first = cards.First();
return cards.Skip(1).Aggregate(new {IsStraight = true, Card = first}, (acc, card) => new
{
IsStraight = acc.IsStraight && acc.Card.CardNomination.Value - card.CardNomination.Value == 1, Card = card
}).IsStraight
? new Straight(first.CardNomination)
// A,5,4,3,2
: cards.Select(c => c.CardNomination)
.Except(new CardNomination[] { new MajorCardNomination(MajorCardType.Ace), new MinorCardNomination(5), new MinorCardNomination(4), new MinorCardNomination(3), new MinorCardNomination(2) }).Any()
? null
: new Straight(new MinorCardNomination(5));
}
public static bool IsPlayer1Wins(Card[][] cardSets)
{
return GetHand(cardSets.First().OrderByDescending(c => c.CardNomination).ToArray())
.CompareTo(GetHand(cardSets.Skip(1).First().OrderByDescending(c => c.CardNomination).ToArray()))
== 1;
}