How to implement a dealer class without storing a deck of cards?

Question

• Question

  Even only 52 cards, the permutationIndex where I describe in Explanations section, would be a huge number; it is

Answer 1

Like the others I am not sure what you want to do but if you want to save as much space a possible on the communication/storage of the dealt cards I would do the following:

I would store the cards dealt on a single Long using a enum with the flag attribute so I could use bitwise comparisons to see which card has been dealt.

Because each card is a separate "flag" with a unique number which is set to the exponent of 2 so they will never clash.

In total even if you deal all the cards the storage will still be 8 bytes. any extra data you need you can bolt on the end.

Please see the working example below.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication12
{
    class Program
    {
        static void Main(string[] args)
        {
            // Because each card is unique you could use Flag attributed Enum see the enum below and set each item a unique value I used 2 to the power of 52
            Cards cardsdealt = Cards.Clubs_10 | Cards.Clubs_2 | Cards.Diamonds_3;

            if ((cardsdealt & Cards.Clubs_10) == Cards.Clubs_10)
            {
                Console.WriteLine("Card.Clubs_10 was dealt");
            }

            // Storage would always be 8 bytes for the long data type
        }

        [Flags]
        public enum Cards : long
        {
            Spades_Ace = 1,
            Spades_2 = 2,
            Spades_3 = 4,
            Spades_4 = 8,
            Spades_5 = 16,
            Spades_6 = 32,
            Spades_7 = 64,
            Spades_8 = 128,
            Spades_9 = 256,
            Spades_10 = 512,
            Spades_Jack = 1024,
            Spades_Queen = 2048,
            Spades_King = 4096,
            Hearts_Ace = 8192,
            Hearts_2 = 16384,
            Hearts_3 = 32768,
            Hearts_4 = 65536,
            Hearts_5 = 131072,
            Hearts_6 = 262144,
            Hearts_7 = 524288,
            Hearts_8 = 1048576,
            Hearts_9 = 2097152,
            Hearts_10 = 4194304,
            Hearts_Jack = 8388608,
            Hearts_Queen = 16777216,
            Hearts_King = 33554432,
            Diamonds_Ace = 67108864,
            Diamonds_2 = 134217728,
            Diamonds_3 = 268435456,
            Diamonds_4 = 536870912,
            Diamonds_5 = 1073741824,
            Diamonds_6 = 2147483648,
            Diamonds_7 = 4294967296,
            Diamonds_8 = 8589934592,
            Diamonds_9 = 17179869184,
            Diamonds_10 = 34359738368,
            Diamonds_Jack = 68719476736,
            Diamonds_Queen = 137438953472,
            Diamonds_King = 274877906944,
            Clubs_Ace = 549755813888,
            Clubs_2 = 1099511627776,
            Clubs_3 = 2199023255552,
            Clubs_4 = 4398046511104,
            Clubs_5 = 8796093022208,
            Clubs_6 = 17592186044416,
            Clubs_7 = 35184372088832,
            Clubs_8 = 70368744177664,
            Clubs_9 = 140737488355328,
            Clubs_10 = 281474976710656,
            Clubs_Jack = 562949953421312,
            Clubs_Queen = 1125899906842620,
            Clubs_King = 2251799813685250,

        }
    }
}