/*
In JavaScript (and possibly other languages), the reversedList array is pointless and creates unnecessary space overhead for the function. You can build a string directly from the stack, like so:
*/

class Solution {
    reverseString(s) {
        if(!s.length) { return s }

        const stack = s.split('');
        let output = '';

        while(stack.length) {
            output += stack.pop();
        }

        return output;
    }
}