// Car.java -- the object of the game is to win the car by guessing
// its price.  This class will define a car of a particular price.
import java.util.*;

public class Car
{
  private int [] digit;
  private BagArrayList bag;
  private String showString;
  private String correct;

  // The price of the car should be 10,000-40,000 and with distinct digits.
  public Car()
  {
    showString = "_____";
    correct = "";
    bag = new BagArrayList();
    Random gen = new Random();

    digit = new int[5];
    digit[0] = gen.nextInt(3) + 1;
    for (int i = 1; i < 5; ++i)
    {
      boolean found = false;
      do
      {
        digit[i] = gen.nextInt(10);
        found = false;
        for (int j = 0; j < i; ++j)
          if (digit[j] == digit[i])
	    found = true;
      } while(found);
    }

    // put the digits and the 3 strikes in the bag
    for (int i = 0; i < 5; ++i)
    {
      bag.add(new String("" + digit[i]));
      correct += digit[i];
    }
    bag.add(new String("X"));
    bag.add(new String("X"));
    bag.add(new String("X"));
  }

  public BagArrayList getBag()
  {
    return bag;
  }

  public String toString()
  {
    return showString;
  }

  public String getCorrect()
  {
    return correct;
  }

  // No one outside this file should know the price, but we should
  // provide a way to verify if a particular guess of a digit is correct.
  // Reset the show string to reveal newest digit if correct.
  public boolean isCorrect(int position, int value)
  {
    boolean result = digit[position - 1] == value;
    if (result)
	showString = showString.substring(0, position - 1) + value +
	             showString.substring(position);
    return result;
  }
}