static void Main(string[] args)
{
Console.WriteLine("Hello World!");
var f = File.OpenRead(args[0]);
var sr = new StreamReader(f);
string line;
bool first = true;
Dictionary <int, HandOfCards> hands = new Dictionary <int, HandOfCards>();
int currentplayer = 0;
HandOfCards currenthoc;
List <int> currenthand = new List <int>();
while ((line = sr.ReadLine()) != null)
{
if (line.StartsWith("Player"))
{
if (!first)
{
currenthoc = new HandOfCards(currenthand);
hands.Add(currentplayer, currenthoc);
}
first = false;
currentplayer = Int32.Parse(line.Substring(6, line.Trim().Length - 7));
currenthand = new List <int>();
}
else if (line.Trim() == "")
{
; // skip, we'll see a Player or end of line soon.
}
else
{
// should be an int.
int card = Int32.Parse(line);
currenthand.Add(card);
}
}
currenthoc = new HandOfCards(currenthand);
hands.Add(currentplayer, currenthoc);
// should now have players.
Console.WriteLine($"We have {hands.Count} players.");
foreach (var(p, h) in hands)
{
Console.WriteLine($" Player {p} has {h.Count} cards.");
}
if (hands.Count != 2)
{
throw new Exception("Too many hands or too few!");
}
HandOfCards player1 = hands[1];
HandOfCards player2 = hands[2];
//int winner = Part1Game.Part1GamePlay(player1, player2);
int winner = Part2Game.Part2GamePlay(player1, player2);
Console.WriteLine($"Well done Player {winner}");
}
public static int Part1GamePlay(HandOfCards player1, HandOfCards player2)
{
// Playing the game.
Console.WriteLine("Let's Play!");
while (player1.Count > 0 && player2.Count > 0)
{
int p1card = player1.PopTop();
int p2card = player2.PopTop();
if (p1card > p2card)
{
// p1 wins, gets both cards, highest first.
player1.AddToBottom(p1card);
player1.AddToBottom(p2card);
}
else
{
// p2 wins, gets both cards, highest first.
player2.AddToBottom(p2card);
player2.AddToBottom(p1card);
}
}
int winner = (player1.Count > 0) ? 1 : 2;
var winnershand = (player1.Count > 0) ? player1 : player2;
long sum = ProduceWinningSum(winnershand);
Console.WriteLine($"The final sum is {sum}");
return(winner);
}
public static long ProduceWinningSum(HandOfCards winnershand)
{
long sum = 0;
int x = winnershand.Count;
while (winnershand.Count > 0)
{
int c = winnershand.PopTop();
sum += c * x;
x -= 1;
}
return(sum);
}
public static int Part2GamePlay(HandOfCards player1, HandOfCards player2)
{
List <(HandOfCards, HandOfCards)> previousHands = new List <(HandOfCards, HandOfCards)>();
return(Part2GamePlay(player1, player2, 1, previousHands));
}
private static int Part2GamePlay(HandOfCards player1, HandOfCards player2, int level, List <(HandOfCards, HandOfCards)> previousHands)
public HandOfCards(HandOfCards hand, int num) : this(hand.cards, num)
{
}