2390-removing-stars-from-a-string.cpp

class Solution {
public:
    string removeStars(string s) {
        stack<char> stk;
        for(int i=0;i<s.size();i++){
            if(s[i]=='*'){
                stk.pop();
            }else stk.push(s[i]);
        }
        string res = "";
        while(!stk.empty()){
            res += stk.top();
            stk.pop();
        }
         reverse(res.begin(), res.end());
         return res;
    }
};