Method subset

Java/Recursion/Subset_Sum.java:4–9

(int arr[],int s, int i, int n)

class Subset_Sum 
{
    static int subset(int arr[],int s, int i, int n)
    {
        if(i == n)
           return ((s == 0) ? 1 : 0);
        return subset(arr, s - arr[i], i+1, n) + subset(arr, s ,i+1, n);
    }
    public static void main(String args[])
    {
        Scanner I = new Scanner(System.in);