/// <summary>
/// Breaks deck into as many as 7 piles and places the cards one by one into piles
/// </summary>
/// <param name="deck"></param>
/// <returns></returns>
public CardCollectionOperationResult PileShuffle(Deck deck)
{
int pileCount = Math.Min(DEFAULT_PILE_COUNT, deck.Count);
int cardCount = deck.Count;
LinkedList<Deck> piles = new LinkedList<Deck>(new Deck[pileCount]);
for (int i = 0; i < cardCount; ++i)
{
Card card = deck.ElementAt(0);
Deck currentPile = piles.ElementAt(0);
deck.RemoveAt(0);
currentPile.Insert(0, card);
piles.AddLast(currentPile);
piles.RemoveFirst();
}
if (deck.Count == 0)
deck = new Deck();
foreach (Deck pile in piles)
deck.AddRange(pile);
return new CardCollectionOperationResult(deck);
}
/// <summary>
/// Removes a card a specified index
/// </summary>
/// <param name="deck"></param>
/// <param name="index"></param>
/// <returns></returns>
private CardCollectionOperationResult RemoveCardAtIndex(Deck deck, int index)
{
Card card = deck[index];
deck.RemoveAt(index);
return new CardCollectionOperationResult(deck, card);
}