#include <stack>
#include <string>
class Reverse {
public:
    string reverseString(string iniString) {
        // write code here
        stack<char> stack1;
        string res="";
        for(auto i:iniString){
            stack1.push(i);
        }
        while (!stack1.empty()) {
            res += stack1.top();
            stack1.pop();
        }
        return res;
    }
};

栈的运用