# https://leetcode.com/problems/reverse-substrings-between-each-pair-of-parentheses
from typing import List

class Solution:
    def reverseParentheses(self, s: str) -> str:
        stack: List[str] = ['']
        for c in s:
            match c:
                case '(':
                    stack.append('')
                case ')':
                    top = stack.pop()[::-1]
                    stack[len(stack)-1] += top
                case _:
                    stack[len(stack)-1] += c
        return stack[0]