You have three identical prizes to give away and a pool of 10 finalist. The fina

Question

You have three identical prizes to give away and a pool of 10 finalist. The finalists are assigned numbers from 1 to 10. Write a program to randomly select the numbers of three finalists to receive a price. Make sure not to pick the same number twice. For example, picking finalist 3, 6, 2 would be valid but picking 3,3,11 would be invalid because finalist 3 is listed twice and 11 is not a valid finalist number. The following line of code can be used to generate a random number between 1 and 10:

int num = (int) (Math.random() * 10) +1;

Explanation / Answer

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
   public static void main (String[] args) throws java.lang.Exception
   {
       int num1;
       num1 = (int) (Math.random() * 10) +1;
      
       int num2 = num1;
       while(num1==num2)
           num2 = (int) (Math.random() * 10) +1;
      
       int num3 = num2;
       while(num3==num1||num3==num2)
           num3 = (int) (Math.random() * 10) +1;
          
       System.out.println("First prize goes to finalist "+ num1);
       System.out.println("Second prize goes to finalist "+ num2);
       System.out.println("Third prize goes to finalist "+ num3);
   }
}

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