C# Çekiliş Kodu

tickets[i].p = tickets[i].w / sum

public class Lottery<T>
{
    public class Ticket
    {
        public T Key { get; private set; }
        public double Weight { get; private set; }
        public Ticket(T key, double weight)
        {
            this.Key = key;
            this.Weight = weight;
        }
    }
    List<Ticket> tickets = new List<Ticket>();
    static Random rand = new Random();
    public void Add(T key, double weight)
    {
        tickets.Add(new Ticket(key, weight));
    }
    public Ticket Draw(bool removeWinner)
    {
        double r = rand.NextDouble() * tickets.Sum(a => a.Weight);
        double min = 0;
        double max = 0;
        Ticket winner = null;
        foreach (var ticket in tickets)
        {
            max += ticket.Weight;
            //-----------
            if (min <= r && r < max)
            {
                winner = ticket;
                break;
            }
            //-----------
            min = max;
        }
        if (winner == null) throw new Exception();
        if (removeWinner) tickets.Remove(winner);
        return winner;
    }
}