recursively sum the integers in an array

Question

I have a program that I\'m trying to make for class that returns the sum of all the integers in an array using recursion. Here is my program thus far:

public         


        

Answer 1

private static int sum(int[] arr) {
    // TODO Auto-generated method stub
    int n = arr.length;

    if(n==1)
    {
        return arr[n-1];
    }

    int ans = arr[0]+sum(Arrays.copyOf(arr, n-1));

    return ans;
}