Prime Checker Hackerrank Solution

 Prime Checker Hackerrank Solution

For Explanation watch video :

Sample Input

2
1
3
4
5

Sample Output

2 
2 
2 3 
2 3 5 

Code:

import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;
import java.lang.reflect.*;
import static java.lang.System.in;
class Prime{
    public void checkPrime(int... arr){//2 1 3 4 5
        for(int i=0;i<arr.length;i++){
            if(arr[i]<2){
                
            }else if(arr[i]==2){
                System.out.print(arr[i]+" ");//2
            }
            else{
                int logic = 1;
                for(int j=2;j<arr[i];j++){
                    if(arr[i]%j==0){
                        logic = 0;
                        break;
                    }
                }
                if(logic==1){
                    System.out.print(arr[i]+" ");//3 5
                }
            }
        }
        System.out.println();
    }
}
public class Solution {
    public static void main(String[] args) {
        try{
        BufferedReader br=new BufferedReader(new InputStreamReader(in));
        int n1=Integer.parseInt(br.readLine());
        int n2=Integer.parseInt(br.readLine());
        int n3=Integer.parseInt(br.readLine());
        int n4=Integer.parseInt(br.readLine());
        int n5=Integer.parseInt(br.readLine());
        Prime ob=new Prime();
        ob.checkPrime(n1);
        ob.checkPrime(n1,n2);
        ob.checkPrime(n1,n2,n3);
        ob.checkPrime(n1,n2,n3,n4,n5);  
        Method[] methods=Prime.class.getDeclaredMethods();
        Set<String> set=new HashSet<>();
        boolean overload=false;
        for(int i=0;i<methods.length;i++)
        {
            if(set.contains(methods[i].getName()))
            {
                overload=true;
                break;
            }
            set.add(methods[i].getName());
            
        }
        if(overload)
        {
            throw new Exception("Overloading not allowed");
        }
        }
        catch(Exception e)
        {
            System.out.println(e);
        }
    }
    
}