Tell us what’s happening:
Describe your issue in detail here.
I feel like i somewhat conceptually understand recursion. But in this problem why are we adding " arr[n - 1]" se seen below.
return sum(arr, n - 1) + arr[n - 1];
it makes more sense to me to say " + arr [n];
**Your code so far**
function sum(arr, n) {
// Only change code below this line
function sum(arr, n) {
if(n <= 0) {
return 0;
} else {
return sum(arr, n - 1) + arr[n - 1];
}
}
// Only change code above this line
}
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Challenge: Replace Loops using Recursion
Link to the challenge: