Question

Write a method called sumArray that accepts a reference to an array of doubles and returns the sum of the values stored in the array.

Answer 1

public class SumRecursive {

    public static int sum(int[] arr, int size) {
        if(size == 0) {
            return 0;
        } else {
            return arr[size-1] + sum(arr, size-1);
        }
    }

    public static void main(String[] args) {
        int[] arr = {3, 9, 1, 6, 5};
        System.out.println("Sum of all values in array is " + sum(arr, arr.length));
    }
}