new class js -advanced

02_advanced/MATERIAL/advanced-js/lesson_02/examples/sumArrayIndex.js

@@ -0,0 +1,13 @@
+function sumArrayIndex(arr, index = 0) {
+  // Base case: when index is greater than or equal to the length of the array return 0
+  if (index >= arr.length) {
+    return 0;
+  }
+  // Recursive case: add the current element to the sum of the rest of the array
+  return arr[index] + sumArrayIndex(arr, index + 1);
+}
+
+// Test cases
+console.log(sumArrayIndex([1, 2, 3, 4, 5])); // => 15
+console.log(sumArrayIndex([10, -2, 33, 47])); // => 88
+console.log(sumArrayIndex([])); // => 0