/***********************
 * The Mastermind Game *
 *                     *
 * Shane Grimminck     *
 * Copyright 2008      *
 ***********************/

import java.io.*;

public class mastermind
{
    public static void main (String[] args) throws IOException
    {
        //Variable Declarations
        long masterNumbers;
        String masterString;
        String guessString = "";
        int guessInt;
        int count = 0;
        char[] masterChar = {'a', 'a', 'a', 'a'};
        char[] guessChar = new char [4];

        boolean[] posRight = new boolean [4]; // will be used to determine if the number is in the right position.
        boolean[] numRight = new boolean [4]; // will be used to determine if the number is correct.


        //Buffered Reader and Input Stream Reader Declarations
        InputStreamReader isr = new InputStreamReader (System.in);
        BufferedReader input = new BufferedReader (isr);


        masterNumbers = (Math.round (Math.random () * 10000)); // returns a Random 4 digit number
        masterString = String.valueOf (masterNumbers); // converts the number into a string
        masterChar = masterString.toCharArray (); // converts the String into an array of char

        if (masterChar [0] == 'a')
        {
            masterNumbers = (Math.round (Math.random () * 10000)); // returns a Random 4 digit number
            masterString = String.valueOf (masterNumbers); // converts the number into a string
            masterChar = masterString.toCharArray (); // converts the String into an array of char
        }

        if (masterChar [1] == 'a')
        {
            masterNumbers = (Math.round (Math.random () * 10000)); // returns a Random 4 digit number
            masterString = String.valueOf (masterNumbers); // converts the number into a string
            masterChar = masterString.toCharArray (); // converts the String into an array of char
        }

        if (masterChar [2] == 'a')
        {
            masterNumbers = (Math.round (Math.random () * 10000)); // returns a Random 4 digit number
            masterString = String.valueOf (masterNumbers); // converts the number into a string
            masterChar = masterString.toCharArray (); // converts the String into an array of char
        }

        if (masterChar [3] == 'a')
        {
            masterNumbers = (Math.round (Math.random () * 10000)); // returns a Random 4 digit number
            masterString = String.valueOf (masterNumbers); // converts the number into a string
            masterChar = masterString.toCharArray (); // converts the String into an array of char
        }





        //System.out.println (masterString);
        while ((!(masterString.equals (guessString))) && count < 3)
        {
            System.out.print ("Your guess : ");
            guessInt = Integer.parseInt (input.readLine ());
            guessString = String.valueOf (guessInt);
            guessChar = guessString.toCharArray ();
            count++;

            /* for (int i = 0 ; i < 4 ; i++)
             {
                 System.out.println ("Master : " + masterChar [i] + " Guess : " + guessChar [i]);
             }
            */
            for (int i = 0 ; i < 4 ; i++)
            {
                if (masterChar [i] == guessChar [i])
                {
                    posRight [i] = true;
                    System.out.println ("Num " + (i + 1) + " is correct!");
                }
            }

            for (int i = 0 ; i < 4 ; i++)
            {
                if ((masterChar [i] == guessChar [0]) && posRight [i] == false)
                {
                    numRight [i] = true;

                    System.out.println (guessChar [0] + " is not in the correct position.");
                }
            }

            for (int i = 0 ; i < 4 ; i++)
            {
                if ((masterChar [i] == guessChar [1]) && posRight [i] == false)
                {
                    numRight [i] = true;

                    System.out.println (guessChar [1] + " is not in the correct position.");
                }
            }

            for (int i = 0 ; i < 4 ; i++)
            {
                if ((masterChar [i] == guessChar [2]) && posRight [i] == false)
                {
                    numRight [i] = true;

                    System.out.println (guessChar [2] + " is not in the correct position.");
                }
            }

            for (int i = 0 ; i < 4 ; i++)
            {
                if ((masterChar [i] == guessChar [3]) && posRight [i] == false)
                {
                    numRight [i] = true;

                    System.out.println (guessChar [3] + " is not in the correct position.");
                }
            }
        }
        if (masterString.equals (guessString))
        {
            System.out.println ("You Win!");
        }
        else
        {
            System.out.println ("You Lose");
            System.out.println ("The answer was : " + masterString);
        }
    }
}

if (masterChar [0] == 'a')
if (masterChar [1] == 'a')
...

/***********************
 * The Mastermind Game *
 *  v2                   *
 * Shane Grimminck     *
 * Copyright 2008      *
 ***********************/
 
 //Thanks to Tony for helping shorten this to 97 lines instead of 141

import java.io.*;

public class mastermind2
{
    public static void main (String[] args) throws IOException
    {
        //Variable Declarations
        long masterNumbers;
        String masterString;
        String guessString = "";
        int guessInt;
        int count = 0;
        char[] masterChar = {'a', 'a', 'a', 'a'};
        char[] guessChar = new char [4];

        boolean[] posRight = new boolean [4]; // will be used to determine if the number is in the right position.
        boolean[] numRight = new boolean [4]; // will be used to determine if the number is correct.


        //Buffered Reader and Input Stream Reader Declarations
        InputStreamReader isr = new InputStreamReader (System.in);
        BufferedReader input = new BufferedReader (isr);


        masterNumbers = (Math.round (Math.random () * 10000)); // returns a Random 4 digit number
        masterString = String.valueOf (masterNumbers); // converts the number into a string
        masterChar = masterString.toCharArray (); // converts the String into an array of char

        for (int i = 0 ; i < 4 ; i++0)
        {
            if (masterChar [i] == 'a')
            {
                masterNumbers = (Math.round (Math.random () * 10000)); // returns a Random 4 digit number
                masterString = String.valueOf (masterNumbers); // converts the number into a string
                masterChar = masterString.toCharArray (); // converts the String into an array of char
            }
        }

        while ((!(masterString.equals (guessString))) && count < 3)
        {
            guessInt = Integer.parseInt (input.readLine ());
            guessString = String.valueOf (guessInt);
            guessChar = guessString.toCharArray ();
            count++;

            /* for (int i = 0 ; i < 4 ; i++)
             {
                 System.out.println ("Master : " + masterChar [i] + " Guess : " + guessChar [i]);
             }
            */
            for (int i = 0 ; i < 4 ; i++)
            {
                if (masterChar [i] == guessChar [i])
                {
                    posRight [i] = true;
                    System.out.println ("Num " + (i + 1) + " is correct!");
                }
            }
           
            for (int o = 0 ; o < 4 ; o++)
            {
                for (int i = 0 ; i < 4 ; i++)
                {

                    if ((masterChar [i] == guessChar [o]) && posRight [i] == false)
                    {
                        numRight [i] = true;

                        System.out.println (guessChar [o] + " is not in the correct position.");
                    }
                }
            }

        }
       
        if (masterString.equals (guessString))
        {
            System.out.println ("You Win!");
        }
       
        else
        {
            System.out.println ("You Lose");
            System.out.println ("The answer was : " + masterString);
        }
    }
}