Question

( Java Programming )

Write an application to simulate the rolling of two dice. The application should use an object of class Random once to roll the first die and again to roll the second die. The sum of the two values should then be calculated. Each die can show an integer value from 1 to 6, so the sum of the values will vary from 2 to 12, with 7 being the most frequent sum, and 2 and 12 the least frequent. Figure 1 shows the 36 possible combinations of the two dice. Your application should roll the dice 36,000,000 times. Use a one-dimensional array to tally the number of times each possible sum appears. Display the results in tabular format.

Answer 1

Here is the code for the following problem :

Code :

import java.util.Random;

public class Main
{
//execeuionof the program starts from here
   public static void main(String[] args) {
       //1D-array stores all possible sum
       //each index is considered as possible sum starts from 0
       int[] possible_sum = new int[13];
      
       //create the object of Random class
       Random random = new Random();
      
       //loop the dice pair for 36,000,000
       for(int i=1; i<=36000000; i++)
       {
       int dice1 = random.nextInt(6) + 1;
       int dice2 = random.nextInt(6) + 1;
         
       //increament the index equla to the sum of dice
       possible_sum[dice1 + dice2]++;
       }
      
       //print the array, which represent how many times each sum appesr
       for(int i=2; i<13; i++)
       {
       System.out.println("Sum : "+ i + " Appear : " + possible_sum[i]);
       }
      
   }
}

------------------------------------------------------------------------------------------------------------------------------------------------------

Screenshots :

Output :