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

namespace ConsoleApplication2
{
    class Program
    {
        static Random rand = new Random();
        private static int number = rand.Next(1, 100), guess, guessComp, lastGuessComp, lastGuess;
        private static bool guessed, playerTurn = true;
        private static List<int> numberTable = new List<int>();

        static void Main(string[] args)
        {
            while (!guessed)
            {
                if (Program.playerTurn)
                {
                    Console.WriteLine("Guess a number between 1-100\r");

                    if (Program.lastGuess > Program.guess)
                    {
                        Console.WriteLine("Last number guessed " + Program.numberTable.Last() + "");
                        Console.WriteLine("(lower)");

                    }
                    if (Program.lastGuess < Program.guess)
                    {
                        Console.WriteLine("Last number guessed " + Program.numberTable.Last() + "");
                        Console.WriteLine("(higher)");
                    }

                    Program.guess = int.Parse(Console.ReadLine());

                    Program.determineGuessPlayer(guess);
                    ComputersActions();
                }
            }
        }

        public static void determineGuessPlayer(int number)
        {
            if (Program.numberTable.Contains(Program.guess))
            {
                Console.WriteLine("Number already guessed, try another.\r");
                Program.guess = int.Parse(Console.ReadLine());
            }
            if (number == Program.number)
            {
                Console.WriteLine("You win!");
                Console.ReadLine();
                Program.guessed = true;
            }
            if (number < Program.number)
            {
                Console.WriteLine("Higher...");
                Program.numberTable.Add(Program.guess);
                Program.playerTurn = false;
                Program.lastGuess = Program.number;
            }
            if (number > Program.number)
            {
                Console.WriteLine("Lower...");
                Program.numberTable.Add(Program.guess);
                Program.playerTurn = false;
                Program.lastGuess = Program.number;
            }
        }

        static void ComputersActions()
        {
            if (!Program.playerTurn)
            {
                if (Program.guessComp == 0)
                {
                    Program.guessComp = rand.Next(1, 100);
                }
                {
                    if (Program.lastGuessComp < Program.number)
                    {
                        Program.guessComp = rand.Next(Program.lastGuessComp, Program.number);
                    }
                    else if (Program.lastGuessComp > Program.number)
                    {
                        Program.guessComp = rand.Next(Program.number, Program.lastGuessComp);
                    }
                    else
                    {
                        Program.guessComp = ++Program.lastGuessComp;
                    }
                }
                if (Program.guessComp == Program.number)
                {
                    Console.WriteLine("The computer picks a number...");
                    Console.WriteLine("The Computer wins!");
                    Console.ReadLine();
                    Program.guessed = true;
                }
                else
                {
                    Console.WriteLine("The computer picks a number...");
                    Program.lastGuessComp = Program.guessComp;
                    Program.playerTurn = true;
                }
            }
        }
    }
}