题解 | #单词倒排#

#include <iostream>
#include <vector>
#include <string>
#include <algorithm>

using namespace std;

int main(){
    string str = "";
    getline(cin, str);
    str += " ";
    vector<string> vec;
    string tmp = "";
    for(char c : str){
        if(!isalpha(c)){
            if(!tmp.empty()){
                vec.push_back(tmp);
                tmp.clear();
            }
        }
        else{
            tmp += c;
        }
    }
    
    reverse(vec.begin(), vec.end());
    string res = "";
    for(int i = 0; i < vec.size(); i++){
        //cout << vec[i]<<endl;
        res += vec[i];
        res += " ";
    }
    res.pop_back();
    
    cout << res << endl;
    
    return 0;
}