import java.util.*;

public class ExerciseBlackJackDiceGame
{

   public static void main(String[] args)
   {
      Scanner console = new Scanner(System.in);
      Random r = new Random();

      int diceThrow = (r.nextInt(12) + 1);
      int playerTotal = diceThrow;

      System.out.println("You start out with a: " + diceThrow);

      String playerChoice = "y";

  //1.USER THROWS
  while (playerChoice.equals("y"))
  {
      System.out.println("Do you want want to roll the dice again y/n: ");
      playerChoice = console.next();

      if (playerChoice.equals("y"))
      {
         diceThrow = (r.nextInt(12) + 1);
         playerTotal = playerTotal + diceThrow;
         System.out.println("You now have: " + playerTotal);
      }
      if (playerTotal > 21)
      {
         System.out.println("You exceeded 21. The machine wins!");
         return;
      }
      if (playerTotal == 21)
      {
         System.out.println("BLACKJACK!!!! YOU WIN!!!!");
         return;
      }

   // 2.MACHINE THROWS
   // This is more or less the same procedure as above
   // but you do not ask the machine if it wants to go on.
   // You have to set up some rules (algorithm) that makes
   // the machine go on or stop.
   // And remember that if the user got 21,
   // then the machine has already lost.
   // And if the user exeeded 21, then the machine has already won
   if (playerChoice.equals("n"))
   {
      int machineDiceThrow = 0;
      int machineTotal = 0;
      while (machineTotal <= 21)
      {
         diceThrow = (r.nextInt(12) + 1);
         machineDiceThrow = diceThrow;
         machineTotal = machineTotal + machineDiceThrow;

      if (machineTotal >= 17)
      {
         if (machineTotal > 21)
         {
            System.out.println("Machine has " + machineTotal);
            System.out.println("Machine exceeded 21. YOU WIN!");
            return;
         }
         else if (machineTotal > playerTotal)
         {
            System.out.println("Machine wins!");
            System.out.println("Machine has " + machineTotal);
            System.out.println("You have " + playerTotal);
            return;
         }
         else if (machineTotal < playerTotal)
         {
            System.out.println("YOU WIN!");
            System.out.println("Machine has " + machineTotal);
            System.out.println("You have " + playerTotal);
            return;
         }
         else if (machineTotal == playerTotal)
         {
            System.out.println("It is a draw!");
            System.out.println("Machine has " + machineTotal);
            System.out.println("You have " + playerTotal);
            return;
         }
     }
    }
   }
  }

 }

}

// 3.CHECK WHO WON
  // Here you will have to check:
  // 1. Did the user get 21, then he wins
  // 2. did the user exeed 21, then machine wins
  // 3. did the machine exeed 21, then user wins
  // 4. is the users sum larger than the machines, the user win
  // 5. is the machine sum larger than users, then machine win
  // 6. did user and machine get the same sum, then it is a draw