/**
 * Rolls a pair of n-sided dices, x amount of times, and gives the probability for each sum.
 *
 * @author Ricky Mutschlechner
 * @version 11/03/2010
 */

import java.util.Random;
import java.util.Scanner;
public class DiceProbability
{
    public static void main(String[] args)
    {
        //Declare and initialize variables and objects
        Scanner in = new Scanner(System.in);
        Random randNumber = new Random();

        int match = 0; //Number of times sum of dice matches the current sum
        int die1, die2; //Random generated numbers


        //Input: ask user for number of rolls and number of sides on a die

        System.out.println("How many rolls would you like? ");
        int rolls = in.nextInt();

        //If amount of sides are to be chosen:
        System.out.println("How many sides would you like? ");
        int sides = in.nextInt();

        //Print heading for output table
        System.out.println("Number of Rolls: " + rolls);
        System.out.println(" Sum of Dice            Probability");


        //***************************************************************************************
        //Using nested loops, cycle through the possible sums of the dice.
        //Roll the dice the given number of times for each sum.
        //Count how many times the sum of the dice match the current sum being looked for.
        //***************************************************************************************

        int randNum = 0;

        for(int n = 2; n <= (2 * sides); n++)
            {
                System.out.print("\n" + n + "s");
                int counter = 0;
                for (int i = 0; i < rolls; i++)
                {
                    if (randNumber.nextInt(sides + 1) + randNumber.nextInt(sides + 1) == n){
                        counter++;
                    }
                }
                System.out.print("                          " + ((double)counter/rolls*100));
            }


    } //end main
}//end class DiceProbability