gistfile1.txt

class Solution {
public:
    string reverseParentheses(string s) {
        deque<stringstream> stk;
        stk.push_back(stringstream());
        
        for(auto const & c : s){
            if(c == '('){
                stk.push_back(stringstream());
            }else if(c == ')'){
                auto top = stk.back().str(); stk.pop_back();
                reverse(top.begin(), top.end());
                stk.back() << top;
            }else{
                stk.back() << c;
            }
        }
        
        return stk.back().str();
    }
};