Need help solving this I got a good chunk of it done usink a

Need help solving this.

I got a good chunk of it done usink an arrayList but i\'ve been stuck for hours.

write function that returns the LCM of a list of numbers. The function has 1 parameter - a list of integers and return a number - the LCM of the numbers in the list.

Solution

import java.util.*;//importing util package becuase array list present in that package
public class Lcm {
   public static void main(String args[]){
      
       ArrayList<Integer> a=new ArrayList<Integer>();//defining teh arraylist
       a.add(2);                           //adding elements to array list
       a.add(4);
       a.add(6);
       System.out.println(findLcm(a));       //printing the lcm of given arrylist of elements
      
   }
   static int gcd(int a,int b){       //to find gcd of given numbers
       if(b==0)
           return a;
       return gcd(b,a%b);               //retuns the gcd of given numbers
   }
   static int findLcm(ArrayList<Integer> a){   //find the lcm of array of elements
       int result=1;
       for(Integer i : a){               //i loops through arrya
           result=result*i/gcd(result,i);       //caluculates the lcm of given array
       }
       return result;               //return the result
   }
  
}