I have a lottery program that compares two arrays of five elements (the numbers

Question

I have a lottery program that compares two arrays of five elements (the numbers can only go up to 20). First I want to compare the two arrays to see if they have any matching numbers. If they do not match I want to generate a whole new ticket. Then I want to create a file that stores all the numbers and how many times they are generated before the winning ticket is generated. For instance I would want "the number 1 was generated 50 times" or something like that.

I am trying to compare them with for loops, is that a good approach?

please use java

Explanation / Answer

Hi,

Please see below the class and output file.

Please comment any queries/feedbacks

Thanks,

Lottery.java

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Random;

public class Lottery {

   public static void main(String [] args){
       int [] intArray1 = new int[5];
       int [] intArray2 = new int[5];
       int max =20;
       int min=1;
       int randomNum=0;
       boolean matchFound =false;
       Random rn = new Random();
       int totalCount = 0;
       String content ="";

       //Populating first array with randomnumbers
       for(int i=0;i<intArray1.length;i++){
           randomNum = rn.nextInt((max - min) + 1) + min;
           intArray1[i] = randomNum;
       }

       //Populating Second array with randomnumbers
       for(int i=0;i<intArray2.length;i++){
           randomNum = rn.nextInt((max - min) + 1) + min;
           intArray2[i] = randomNum;
       }

      
       System.out.println("Elements in Array Are:");
       printAray(intArray1);
       System.out.println();
       printAray(intArray2);
       //Comparing each elemnt in 2 ararys{
       for(int k=0;k<intArray1.length;k++){
           totalCount =0;
           matchFound =false;
           while(!matchFound){
               if(intArray1[k]!= intArray2[k]){
                   intArray2[k]= createNewTicket();
                   totalCount = totalCount+1;
               }
               else{
                   content = content+" the number "+intArray2[k]+" was generated "+totalCount+" times";
                   matchFound =true;
               }
           }
       }

       System.out.println("Winning Ticket is :");
       printAray(intArray2);
       System.out.println(content);
       writeToFile(content); //Writing to File
   }

   public static int createNewTicket(){
       int [] intArrayNew= new int[5];
       int max =20;
       int min=1;
       int randomNum=0;
       Random rn = new Random();

       //Populating Second array with randomnumbers
       for(int i=0;i<intArrayNew.length;i++){
           randomNum = rn.nextInt((max - min) + 1) + min;
       }

       return randomNum;
   }
  
   public static void printAray(int[] intarray){
       for(int i=0;i<intarray.length;i++){
           System.out.print(intarray[i]+" ");
       }
   }
   /**
   * To write the output to a file
   * @param args
   */
   public static void writeToFile(String content) {

       BufferedWriter bw = null;
       FileWriter fw = null;

       try {

           fw = new FileWriter("output.txt");
           bw = new BufferedWriter(fw);
           bw.write(content);
           bw.flush();

           System.out.println("Done");

       } catch (IOException e) {

           e.printStackTrace();

       }
   }

}

output.txt

the number 12 was generated 24 times
the number 1 was generated 41 times
the number 10 was generated 12 times
the number 9 was generated 23 times
the number 15 was generated 29 times

Sample output:

Elements in Array Are:
12 1 10 9 15
7 17 7 12 17 Winning Ticket is :
12 1 10 9 15
the number 12 was generated 24 times
the number 1 was generated 41 times
the number 10 was generated 12 times
the number 9 was generated 23 times
the number 15 was generated 29 times
Done

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.