A suggestion about recursive function

[allaev]

A small proposal on capitalizeWords recursive function.
Even though your implementation is short and elegant, but that does not involve a recursion.

So I would suggest the code below:

function capitalizeWords (array) {
  if (array.length === 1) {
    return [array[0].toUpperCase()];
  }
  let res = capitalizeWords(array.slice(0, -1));
  res.push(array.slice(array.length-1)[0].toUpperCase());
  return res;
}

Thanks.

[devbuilt]

Thanks for the input! Just updated the recursive solution for this Algo.