#include<bits/stdc++.h>
using namespace std;
stack<char>stk;
string s;
int main(){
cin>>s;
for(int i=0;i<s.size();i++) stk.push(s[i]);
cout<<"size:"<<stk.size()<<endl;
while(!stk.empty()){
cout<<stk.top()<<' ';
stk.pop();
}
cout<<"\nsize:"<<stk.size()<<endl;
return 0;
}
此代码不是题解,此代码可以带人程序
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