Question

I HAVE A PROBLE WITH THIS JAVA PROBLEM CAN ANYONE HELP ME PLEASE.

Exercise 2 Write a program that simulates the Texas Powerball lottery. You will have to do research to find out how many numbers are drawn, and what the range(s) of the numbers are. For this exercise you need to create a class called "Powerbali", which exposes a public function called play'. This function accepts several parameters , which represent the individual numbers the player wants to play. The function on the object should generate the correct amount of random numbers within the correct range(s), and compare the passed numbers to the drawing. This function should return a String that either tells the user that they unfortunately didn't win (if none of the user's numbers match the drawn numbers), or it tells the user the amount of correct numbers that were guessed, and which numbers were guessed correctly, e.g. "Congratulations, you guessed 3 numbers correct l, 2, 3” The class Powerball should overload the function play with one extra boolean parameter, which if passed as true, performs the number drawing over and over, until there occurs a drawing in which all the player's numbers match the randomly generated numbers. This function should return a String that says how many times a drawing was necessary to match the user's numbers Hint: this loop can potentially run for a very long time, and if you're unlucky, never produce a winner. Do not count on this loop to end, so you will have to be extra careful when implementing it, because testing it is not going to be trivial.

Answer 1

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

//class powerball
public class Powerball {
   /*
   * first play method to compare the passed numbers to compare random generated
   * numbers
   */
   public static String play(int... numbers) {
       Random rand = new Random();
       List<Integer> guessedNumbers = new ArrayList<>();
       String str;
       int count = 0;
       for (int num : numbers) {
           if (num == 1) {
               int random_number = rand.nextInt(num + 1);
               if (num == random_number) {
                   count++;
                   guessedNumbers.add(num);
               }
           } else {
               int random_number = rand.nextInt(num);
               random_number += 1;
               if (num == random_number) {
                   count++;
                   guessedNumbers.add(num);
               }
           }

       }
       if (count > 0) {
           str = "\"Congratulations, you guessed " + count + " numbers correct : ";
           for (Integer i : guessedNumbers) {
               str += i + ",";
           }
           str = str.substring(0, str.length() - 1) + "\"";
       } else {
           str = "Sorry !, Unfortunately you didn't win";
       }
       return str;
   }

   /*
   * second play method to take another input boolean which if passed as true,
   * performs the number number drawing over and over again until there occurs a
   * drawing in which all the players numbers match the randomly generated numbers
   */ public static String play(boolean input, int... numbers) {
       Random rand = new Random();
       String str;
       int count = 0;
       if (input == true) {
           for (int num : numbers) {
               int random_number = rand.nextInt(num);
               random_number++;
               if (random_number == num) {
                   count++;
               } else {
                   count++;
                   while (random_number != num) {
                       random_number = rand.nextInt(num);
                       random_number++;
                       count++;
                   }

               }
           }
           str = count + " many times drawing is necessary to match user's numbers";
       } else {
           List<Integer> guessedNumbers = new ArrayList<>();
           for (int num : numbers) {
               if (num == 1) {
                   int random_number = rand.nextInt(num + 1);
                   if (num == random_number) {
                       count++;
                       guessedNumbers.add(num);
                   }
               } else {
                   int random_number = rand.nextInt(num);
                   random_number += 1;
                   if (num == random_number) {
                       count++;
                       guessedNumbers.add(num);
                   }
               }

           }
           if (count > 0) {
               str = "\"Congratulations, you guessed " + count + " numbers correct : ";
               for (Integer i : guessedNumbers) {
                   str += i + ",";
               }
               str = str.substring(0, str.length() - 1) + "\"";
           } else {
               str = "Sorry !, Unfortunately you didn't win";
           }

       }

       return str;

   }

   public static void main(String[] args) {

      
       String str = play(1,3,4,8);
       System.out.println(str);
         
       String output = play(true, 1,3,4,8);
       System.out.println(output);

   }

}

Output

Eile Edit ource Refactor Navigate Search Project Bun Window Help Quick Access! : E | | Console X terminated> Powerbell leve Application) CAProgram FilesJavaljre1.8.016binjavaw.exe (Mer 22, 2019, 8:04:25 AM) "Congratulations, you guessed 1 numbers correct 8" 112 many times drawing is necessary to match user's numbers