of course it would also work

    reverseString(s) {
        const stack = Array.from(s)
        let reversedString = ""
        for (let i = 0; i < s.length; i++) {
            let currentLetter = stack.pop()
            reversedString = reversedString +...

If you're talking about line 10 ...

   while (stack.length > 0) {

... a for in loop would iterate over the string starting with the first character in the string and move towards the last character in the string. This would not reverse the string. You need to star...