Create ArraySum.java

Author: dvir019

ArraySum.java

@@ -0,0 +1,18 @@
+class ArraySum {
+    public static int iterativeSum(int[] arr) {
+        int sum = 0;
+        for (int i = 0; i < arr.length; i++) {
+            sum += arr[i];
+        }
+        return sum;
+    }
+
+    public static int recursiveSum(int[] arr) {
+        return recursiveSum(arr, 0)
+    }
+    public static int recursiveSum(int[] arr, int index) {
+        if (index == arr.length)
+            return 0;
+        return arr[index] + recursiveSum(arr, index + 1);
+    }
+}