Thread: Help altering dice program?

Here is the driver:

import javax.swing.JOptionPane;
public class DiceExperiment{
  public static void main(String[] args){
    String casino=
      JOptionPane.showInputDialog("enter a toss count");
    int tosses=Integer.parseInt(casino);
    Dice d=new Dice();
    d.multiToss(tosses);
    d.displayScoreboard();
  }
}

Here is the class

public class Dice{
  private int[] scoreboard=new int[13];
  public Dice(){
    initializeScoreboard();}
 
  public void initializeScoreboard(){
    for(int j=0;j<13;j++)scoreboard[j]=0;
  }
 
  public int tossDie(){
    return (1+ (int)(6*Math.random()));
  }
 
  public int throwDice(){
    return(tossDie()+tossDie());
  }
 
  public void multiToss(int tossCount){
    int score;
    for(int j=0;j<tossCount;j++){
      score=throwDice();
      scoreboard[score]++;
    }
  }
 
  public int[] getScoreboard(){return scoreboard;}
 
  public void displayScoreboard(){
    for(int j=2;j<13;j++)
      System.out.println("toss of "+ j + " " + scoreboard[j]);
    System.out.println("toss count:");
  }
 
}

So this code rolls a pair of dice a number of times (# of times read from imput pane) and then reports how many times each total resulted from the rolls. I want to alter it so I enter a number into the pane and the dice continue to be rolled until each possible value of the dice throws (2,3,4,5....12) is reached at least the entered number of times. Poor description I know but heres a sample of what I want for an output...

on the input 12
2 30
3 12
4 58
5 66
6 93
7 110
8 96
9 70
10 47
11 32
12 19
toss count: 633

Any help is appreciated!

Here is the output now:

on the input 10...


2 0
3 2
4 0
5 1
6 1
7 2
8 2
9 1
10 1
11 0
12 0
toss count: 10

Sorry the Println's are just supposed to be :

System.out.println( j + " " + scoreboard[j]);


In the second column I want to report the number of times each value was rolled, up until each value reaches a certain integer ( which is the value read in from display window). so if the integer 12 is entered into the window it should print :

2 30
3 12
4 58
5 66
6 93
7 110
8 96
9 70
10 47
11 32
12 19

thats correct

where would you recommend i add that?

So to do this Im gonna use this method minValue which takes the parameter of the int value from the display window. Whats wrong with this?


public void minValue(int value){
int score=0;
while(score<value)
score=throwDice();
scoreboard[score]++;

}

so i made some changes but it still produces the same output as before:

Heres the Driver

import javax.swing.JOptionPane;
public class DiceExperiment{
  public static void main(String[] args){
    String casino=
      JOptionPane.showInputDialog("enter a min value");
    int value=Integer.parseInt(casino);
    Dice d=new Dice();
    d.minValue(value);
    d.displayScoreboard();
  }
}

--- Update ---

and heres the class

public class Dice{
  private int[] scoreboard=new int[13];
  public Dice(){
    initializeScoreboard();}
 
  public void initializeScoreboard(){
    for(int j=0;j<13;j++)scoreboard[j]=0;
  }
 
  public int tossDie(){
    return (1+ (int)(6*Math.random()));
  }
 
  public int throwDice(){
    return(tossDie()+tossDie());
  }
 
  public void multiToss(){
    int score=0;
      score=throwDice();
      scoreboard[score]++;
    }
 
  public void minValue(int value){
    for(int j=0; j<scoreboard.length;j++){
      if(scoreboard[j] != value)multiToss();
      else 
        break;
    }
    }
 
  public int[] getScoreboard(){return scoreboard;}
 
  public void displayScoreboard(){
    for(int j=2;j<13;j++)
      System.out.println(+ j + " " + scoreboard[j]);
  }
 
}

i thought i wouldn't need it since I added the minValue() method which contains a for loop testing to see if all of the scoreboard values are less than the entered int

that if statement in minValue should be

if(scoreboard[j] < value)multiToss();

oh yeah i see what you mean. Whats the best way of fixing this problem?

ok thank

I altered the methods a bit more. I've got a compliation error at the moment....but would something like this be effective?

 
 public void multiToss(){
    int score;
    while(minValue()==true)
      score=throwDice();
      scoreboard[score]++;
    }
 
  public boolean minValue(int value){
    for(int j=2;j<13;j++){
      if(scoreboard[j] < value)
        return true;
      else 
        return false;
    }

I thought I did this in the driver:

import javax.swing.JOptionPane;
public class DiceExperiment{
  public static void main(String[] args){
    String casino=
      JOptionPane.showInputDialog("enter a min value");
    int value=Integer.parseInt(casino);
    Dice d=new Dice();
    d.minValue(value);
    d.displayScoreboard();
  }
}

 public boolean minValue(int value){
    for(int j=2;j<13;j++){
      if(scoreboard[j] < value)
        return true;
    }

Shouldn't the value read in from the display window be passed into the minValue method?