import java.util.*;
public class MasterMind {

    int[] masterCode = new int[5];
    int[] codeGuess = new int[5];
    int masterCodeLen;
    int guess;
    boolean hasWon = false;

    public MasterMind(){
        masterCode = new int[5];
        for(int i = 0; i<4; i++)
            masterCode[i] = (int)(Math.random()*4)+1;
        masterCodeLen = 4;
        guess = 0;
        hasWon = false;
        playGame();
    }

    public MasterMind(String level){
        masterCode = new int[5];
        if(level == "intermediate")
            masterCodeLen = 4;
        else{
            masterCodeLen = 5;
        }
        for(int i = 0; i<masterCodeLen; i++)
            masterCode[i] = (int)(Math.random()*7)+1;
        guess = 0;
        hasWon = false;
        playGame();
    }

    public int rightSpot(){
        int sum = 0;
        for(int i = 0; i < masterCodeLen; i++){
            if(codeGuess[i] == masterCode[i])
                sum+=1;
        }
        return sum;
    }

    public int wrongSpot(){
        int sum = 0;
        for(int i = 0; i < masterCodeLen; i++){
            if(codeGuess[i] != masterCode[i])
                sum+=1;
        }
        return sum;
    }

    public void playerGuess(){
        Scanner kbInput = new Scanner(System.in);
        System.out.println("Enter a new guess.");
        for(int i = 0; i < masterCodeLen; i++)
            codeGuess[i] = kbInput.nextInt();
        guess++;
    }

    public boolean guessChecker(){
        while(guess < 8)
            return true;
        return false;
    }

    public boolean hasWon(){
        int sum = 0;
        for(int i = 0; i < masterCodeLen; i++){
            if(codeGuess[i] == masterCode[i])
                sum+=1;
        }
        if(sum == masterCodeLen)
            return true;
        return false;
    }

    public String toString(){
        if(hasWon() == false)
            return "Sorry, you have lost. The computer's code was "+masterCode+".";
        return "You've won! It took you "+guess+" guesses.";
    }

    public void playGame(){
        while(guessChecker() == true){
            playerGuess();
            hasWon();
        }
    }
}