I am learning JavaScript with freeCodeCamp.org. I have a problem passing this challenge about replacing loops with recursion. Following the examples given, I have come up with the code below, but still unable to pass. The worst thing is, I can’t go forward.
function sum(arr, n) {
// Only change code below this line
function sum(arr, n) {
if(n <= 0) {
return 1;
} else {
return sum(arr, n - 1) + arr[n - 1];
}
}
// Only change code above this line
}
I’ve edited your post for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.
You can also use the “preformatted text” tool in the editor (</>) to add backticks around text.
See this post to find the backtick on your keyboard.
Note: Backticks (`) are not single quotes (’).
And please always provide a link to the challenge:
You have two issues here.
First, you’re defining
function sum(arr, n) {
twice, once inside the other.
When I fix that, you still have a problem but you are very close.
I think you need to think about this line:
return 1;
Hint:
Using 1 as your base case (the first number that gets evaluated that you will be combining with the others) made sense in the example to generate a product. Right? Anything multiplied by 1 is itself. But that is not the case with sums, when you’re doing addition. What does that need to be?
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