Complete the following code snippet, which is intended to be a recursive method that will find the sum of all elements in an array of double values from the beginning of the array to index:
A)return (arr[index] + findSum(arr, index + 1));
B)return (findSum(arr, index - 1));
C)return (findSum(arr, index + 1));
D)return (arr[index] + findSum(arr, index - 1));

Question

Complete the following code snippet, which is intended to be a recursive method that will find the sum of all elements in an array of double values from the beginning of the array to index:  
A)return (arr[index] + findSum(arr, index + 1)); 
B)return (findSum(arr, index - 1)); 
C)return (findSum(arr, index + 1)); 
D)return (arr[index] + findSum(arr, index - 1));

Quizplus · Accepted Answer

In order to recursively find the sum of all elements from the beginning of the array to index, we need to add the current element (arr[index]) to the sum of all previous elements, which is exactly what option D does. Option A would recursively find the sum of all elements from index to the end of the array, while option B and C would recursively go backwards or forwards through the array without accounting for the sum of previous elements.

Complete the Following Code Snippet, Which Is Intended to Be