#include<vector>
#include<list>
namespace Ljw
{												//给个缺省值template<class T,class Container=vector<int>>//Container,vector和list的随意切换class stack{public:void push(const T& x){_con.push_back(x);}T& top(){return _con.back();}void pop(){_con.pop_back();}void size(){return _con.size();}bool empty(){return _con.empty();}private:Container _con;};void test1(){stack<int,vector<int>> st;//vector和list的随意切换st.push(1);st.push(2);st.push(3);st.pop();cout << st.top() << endl;stack<int, list<int>>st1; st.push(1);st.push(2);st.push(3);st.pop();cout << st.top() << endl;}
}