Recursion, answer please!

[ILM]

About your code, you have this

@ry.mowdy

sum(arr, n - 1) + arr

where sum(arr, n-1) returns a number and arr is an array, you can’t sum a number to an array - do you maybe want to sum one of the items inside arr?

this is a really comprehensive guide on recursion, it may be helpful to you:

freeCodeCamp Challenge Guide: Use Recursion to Create a Countdown

Guide to understanding recursion As it’s one of the most frequently asked questions on the forum I’ve decided to answer here, so all of you who have hard times with recursion can easily find it. Part 1. Precedence First step to understand recursion requires understanding of operator precedence in JavaScript: Operator precedence determines how operators are parsed concerning each other. Operators with higher precedence become the operands of operators with lower precedence. Source: https://d…