saunderl

using System;
using System.Collections.Generic;

namespace RockPaperScissors
{
    class Program
    {
        static void Main()
        {
            var rand = new Random();

            var HumanChoices = string.Empty;
            char[] GameChoices = {'R', 'P', 'S'};

            var HumanWins = 0;
            var ComputerWins = 0;

            while (true)
            {
                Console.WriteLine("Human Totals\tComputer Totals\tHuman\tComputer");
                Console.Write("------------\t---------------\t-----\t--------    ");

                while (HumanWins < 101 && ComputerWins < 101)
                {
                    var ComputerChoice = rand.Next(1, int.MaxValue) % 3;
                    var SetOfMovesLength = 2;

                    if (HumanChoices.Length >= SetOfMovesLength + 1)
                    {
                        var LastSetOfMoves = HumanChoices.Substring(HumanChoices.Length - SetOfMovesLength);

                        int count = 0;
                        for (var i = 0; i <= HumanChoices.Length - LastSetOfMoves.Length - 1; i++)
                        {
                            if (HumanChoices.Substring(i, LastSetOfMoves.Length + 1) == LastSetOfMoves + "0") count++;
                        }

                        var NumRocks = count;

                        count = 0;
                        for (var i = 0; i <= HumanChoices.Length - LastSetOfMoves.Length - 1; i++)
                        {
                            if (HumanChoices.Substring(i, LastSetOfMoves.Length + 1) == LastSetOfMoves + "1") count++;
                        }

                        var NumPapers = count;

                        count = 0;
                        for (var i = 0; i <= HumanChoices.Length - LastSetOfMoves.Length - 1; i++)
                        {
                            if (HumanChoices.Substring(i, LastSetOfMoves.Length + 1) == LastSetOfMoves + "2")  count++;
                        }

                        var NumScissors = count;

                        var tempMax = NumRocks;
                        var l = new List<int>();

                        if (tempMax < NumPapers) tempMax = NumPapers;
                        if (tempMax < NumScissors) { tempMax = NumScissors; l.Add(2); }

                        if (tempMax == NumPapers)  l.Add(1);
                        if (tempMax == NumRocks) l.Add(0);

                        ComputerChoice = (l[0] + 1) % 3;

                        if (l.Count > 1) ComputerChoice = (l[(rand.Next(1, int.MaxValue) % l.Count)] + 1) % 3;
                    }

                    //10% chance of a random choice
                    if (rand.Next(1, int.MaxValue) % 10 == 1) ComputerChoice = rand.Next(1, int.MaxValue) % 3;

                    Console.Write("Enter Choice(R/P/S) ");

                    ConsoleKeyInfo temp;
                    do
                    {
                        temp = Console.ReadKey(true);
                    }
                    while (temp.Key.ToString().ToUpper() != "R" &&
                           temp.Key.ToString().ToUpper() != "P" &&
                           temp.Key.ToString().ToUpper() != "S");

                    Console.WriteLine(temp.Key.ToString().ToUpper());

                    var HumanChoice = temp.Key.ToString() == "R" ? 0 : temp.Key.ToString() == "P" ? 1 : 2;

                    if (HumanChoice == ComputerChoice - 1 || (HumanChoice == 2 && ComputerChoice == 0)) ComputerWins++;
                    else if (HumanChoice - 1 == ComputerChoice || (HumanChoice == 0 && ComputerChoice == 2)) HumanWins++;

                    HumanChoices += HumanChoice.ToString();

                    Console.Write(HumanWins.ToString().PadLeft(7) + "\t\t" + ComputerWins.ToString().PadLeft(9) + "\t" +
                                  GameChoices[HumanChoice] + "\t" + GameChoices[ComputerChoice] + "\t    ");
                }


                if(HumanWins>ComputerWins) Console.WriteLine("Human Wins!");
                else Console.WriteLine("Computer Wins!");

                Console.WriteLine();
                Console.WriteLine("To Play Again Press The Spacebar Or Any Other Key To Quit.");

                if (Console.ReadKey(true).Key.ToString() != "Spacebar") break;

                Console.WriteLine();

                HumanWins = 0;
                ComputerWins = 0;
            }
        }
    }
}