Java Varargs - Simple Addition Hackerrank Solution

 Java Varargs - Simple Addition Hackerrank Solution

For Explanation Watch Video:

Sample Input

1
2
3
4
5
6

Sample Output

1+2=3
1+2+3=6
1+2+3+4+5=15
1+2+3+4+5+6=21

Code:

import java.io.*;
import java.lang.reflect.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;
class Add{
    public static void add(int... arr){
        int sum = 0;
        for(int i=0;i<arr.length-1;i++){
            System.out.print(arr[i]+"+");
            sum += arr[i];
        }
        sum += arr[arr.length-1];
        System.out.print(arr[arr.length-1]+"=");
        System.out.println(sum);
    }
}
public class Solution {
    public static void main(String[] args) {
       try{
            BufferedReader br=new BufferedReader(new InputStreamReader(System.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());
            int n6=Integer.parseInt(br.readLine());
            Add ob=new Add();
            ob.add(n1,n2);
            ob.add(n1,n2,n3);
            ob.add(n1,n2,n3,n4,n5); 
            ob.add(n1,n2,n3,n4,n5,n6);
            Method[] methods=Add.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)
            {
                e.printStackTrace();
            }
        }
        
    
    
}