Question

Task #1 The while Loop (8 pts) 1. Copy the file DiceSimulation.java as directed by your instructor. Correct syntax errors if any, and improve programming style when necessary (indents, newlines, etc.). DiceSimulation.java is incomplete. Since there is a large part of the program missing, the output will be incorrect if you run DiceSimulation.java. 2. We have declared all the variables. You need to add code to simulate rolling the dice and keeping track of the doubles. Convert the algorithm below into Java code and place it in the main method after the variable declarations, but before the output statements. You will be using several control structures: a while loop and an if-else-if statement nested inside another if statement. Use the indenting of the algorithm to help you decide what is included in the loop, what is included in the if statement, and what isincluded in the nested if-else-if statement. 3. To “roll” the dice, use the nextInt method of the random number generator to generate an integer from 1 to 6. Repeat while the number of dice rolls are less than the number of times the dice should be rolled. Get the value of the first die by “rolling” the first die Get the value of the second die by “rolling” the second die If the value of the first die is the same as the value of the second die If value of first die is 1 Increment the number of times snake eyes were rolled Else if value of the first die is 2 Increment the number of times twos were rolled Else if value of the first die is 3 Increment the number of times threes were rolled Else if value of the first die is 4 Increment the number of times fours were rolled Else if value of the first die is 5 Increment the number of times fives were rolled Else if value of the first die is 6 Increment the number of times sixes were rolled Page 3 of 3 Increment the number of times the dice were rolled 4. Compile and run. You should get numbers that are somewhat close to 278 for each of the different pairs of doubles. Run it several times. You should get different results than the first time, but again it should be somewhat close to 278. Task #2 Using Other Types of Loops: do-while (4 pts) 1. Change the while loop to a do-while loop. 2. Make other necessary changes to save your work as new file named DiceSimulation_Do.java. 3. Compile and run. You should get the same results as at Task #1. Task #3 Using Other Types of Loops: for (4 pts) 1. Change the do-while loop to a for loop. 2. Make other necessary changes to save your work as new file named DiceSimulation_For.java. 3. Compile and run. You should get the same results as at Task #1.

import java.util.Random;   // Needed for the Random class

/**
   This class simulates rolling a pair of dice 10,000 times
   and counts the number of times doubles of are rolled for
   each different pair of doubles.
*/

public class DiceSimulation
{
   public static void main(String[] args)
   {
      final int NUMBER = 10000;  // Number of dice rolls

      // A random number generator used in
      // simulating the rolling of dice
      Random generator = new Random();

      int die1Value;       // Value of the first die
      int die2Value;       // Value of the second die
      int count = 0;       // Total number of dice rolls
      int snakeEyes = 0;   // Number of snake eyes rolls
      int twos = 0;        // Number of double two rolls
      int threes = 0;      // Number of double three rolls
      int fours = 0;       // Number of double four rolls
      int fives = 0;       // Number of double five rolls
      int sixes = 0;       // Number of double six rolls

      // TASK #1 Enter your code for the algorithm here

      // Display the results
      System.out.println ("You rolled snake eyes " +
                          snakeEyes + " out of " +
                          count + " rolls.");
      System.out.println ("You rolled double twos " +
                          twos + " out of " + count +
                          " rolls.");
      System.out.println ("You rolled double threes " +
                          threes + " out of " + count +
                          " rolls.");
      System.out.println ("You rolled double fours " +
                          fours + " out of " + count +
                          " rolls.");
      System.out.println ("You rolled double fives " +
                          fives + " out of " + count +
                          " rolls.");
      System.out.println ("You rolled double sixes " +
                          sixes + " out of " + count +
                          " rolls.");
   }
}

Answer 1

Hi, please find the code below. There are three java files as mentioned in the given problem.

File- DiceSimulation.java

//-------------------------- DiceSimulation.java START ---------------------------------

import java.util.Random;   // Needed for the Random class

/**

   This class simulates rolling a pair of dice 10,000 times

   and counts the number of times doubles of are rolled for

   each different pair of doubles.

*/

public class DiceSimulation

{

   public static void main(String[] args)

   {

        final int NUMBER = 10000;  // Number of dice rolls

        // A random number generator used in

        // simulating the rolling of dice

        Random generator = new Random();

        int die1Value;       // Value of the first die

        int die2Value;       // Value of the second die

        int count = 0;       // Total number of dice rolls

        int snakeEyes = 0;   // Number of snake eyes rolls

        int twos = 0;        // Number of double two rolls

        int threes = 0;      // Number of double three rolls

        int fours = 0;       // Number of double four rolls

        int fives = 0;       // Number of double five rolls

        int sixes = 0;       // Number of double six rolls

      // TASK #1 Enter your code for the algorithm here

        while(count<NUMBER){

            die1Value = generator.nextInt(6)+1;

            die2Value = generator.nextInt(6)+1;

            if(die1Value == die2Value){

                if(die1Value == 1)

                    snakeEyes++;

                else if(die1Value == 2)

                    twos++;

                else if(die1Value == 3)

                    threes++;

                else if(die1Value == 4)

                    fours++;

                else if(die1Value == 5)

                    fives++;

                else

                    sixes++;

            

            }

            count++;

        }

      // Display the results

      System.out.println ("You rolled snake eyes " +

                          snakeEyes + " out of " +

                          count + " rolls.");

      System.out.println ("You rolled double twos " +

                          twos + " out of " + count +

                          " rolls.");

      System.out.println ("You rolled double threes " +

                          threes + " out of " + count +

                          " rolls.");

      System.out.println ("You rolled double fours " +

                          fours + " out of " + count +

                          " rolls.");

      System.out.println ("You rolled double fives " +

                          fives + " out of " + count +

                          " rolls.");

      System.out.println ("You rolled double sixes " +

                          sixes + " out of " + count +

                          " rolls.");

   }

}

//-------------------------- DiceSimulation.java END ---------------------------------

File - DiceSimulation_Do.java

//-------------------------- DiceSimulation_Do.java START ---------------------------------

import java.util.Random;   // Needed for the Random class

/**

   This class simulates rolling a pair of dice 10,000 times

   and counts the number of times doubles of are rolled for

   each different pair of doubles.

*/

public class DiceSimulation_Do

{

   public static void main(String[] args)

   {

        final int NUMBER = 10000;  // Number of dice rolls

        // A random number generator used in

        // simulating the rolling of dice

        Random generator = new Random();

        int die1Value;       // Value of the first die

        int die2Value;       // Value of the second die

        int count = 0;       // Total number of dice rolls

        int snakeEyes = 0;   // Number of snake eyes rolls

        int twos = 0;        // Number of double two rolls

        int threes = 0;      // Number of double three rolls

        int fours = 0;       // Number of double four rolls

        int fives = 0;       // Number of double five rolls

        int sixes = 0;       // Number of double six rolls

      // TASK #1 Enter your code for the algorithm here

        do{

            die1Value = generator.nextInt(6)+1;

            die2Value = generator.nextInt(6)+1;

            if(die1Value == die2Value){

                if(die1Value == 1)

                    snakeEyes++;

                else if(die1Value == 2)

                    twos++;

                else if(die1Value == 3)

                    threes++;

                else if(die1Value == 4)

                    fours++;

                else if(die1Value == 5)

                    fives++;

                else

                    sixes++;

            

            }

            count++;

        }

        while(count<NUMBER);

      

      // Display the results

      System.out.println ("You rolled snake eyes " +

                          snakeEyes + " out of " +

                          count + " rolls.");

      System.out.println ("You rolled double twos " +

                          twos + " out of " + count +

                          " rolls.");

      System.out.println ("You rolled double threes " +

                          threes + " out of " + count +

                          " rolls.");

      System.out.println ("You rolled double fours " +

                          fours + " out of " + count +

                          " rolls.");

      System.out.println ("You rolled double fives " +

                          fives + " out of " + count +

                          " rolls.");

      System.out.println ("You rolled double sixes " +

                          sixes + " out of " + count +

                          " rolls.");

   }

}

//-------------------------- DiceSimulation_Do.java END ---------------------------------

File- DiceSimulation_For.java

//-------------------------- DiceSimulation_For.java START ---------------------------------

import java.util.Random;   // Needed for the Random class

/**

   This class simulates rolling a pair of dice 10,000 times

   and counts the number of times doubles of are rolled for

   each different pair of doubles.

*/

public class DiceSimulation_For

{

   public static void main(String[] args)

   {

        final int NUMBER = 10000;  // Number of dice rolls

        // A random number generator used in

        // simulating the rolling of dice

        Random generator = new Random();

        int die1Value;       // Value of the first die

        int die2Value;       // Value of the second die

        int count = 0;       // Total number of dice rolls

        int snakeEyes = 0;   // Number of snake eyes rolls

        int twos = 0;        // Number of double two rolls

        int threes = 0;      // Number of double three rolls

        int fours = 0;       // Number of double four rolls

        int fives = 0;       // Number of double five rolls

        int sixes = 0;       // Number of double six rolls

      // TASK #1 Enter your code for the algorithm here

        for(count=0;count<NUMBER;count++)

        {

            die1Value = generator.nextInt(6)+1;

            die2Value = generator.nextInt(6)+1;

            if(die1Value == die2Value){

                if(die1Value == 1)

                    snakeEyes++;

                else if(die1Value == 2)

                    twos++;

                else if(die1Value == 3)

                    threes++;

                else if(die1Value == 4)

                    fours++;

                else if(die1Value == 5)

                    fives++;

                else

                    sixes++;

          }

        }

        

      

      // Display the results

      System.out.println ("You rolled snake eyes " +

                          snakeEyes + " out of " +

                          count + " rolls.");

      System.out.println ("You rolled double twos " +

                          twos + " out of " + count +

                          " rolls.");

      System.out.println ("You rolled double threes " +

                          threes + " out of " + count +

                          " rolls.");

      System.out.println ("You rolled double fours " +

                          fours + " out of " + count +

                          " rolls.");

      System.out.println ("You rolled double fives " +

                          fives + " out of " + count +

                          " rolls.");

      System.out.println ("You rolled double sixes " +

                          sixes + " out of " + count +

                          " rolls.");

   }

}

//-------------------------- DiceSimulation_For.java END ---------------------------------