题解 | #单词倒排#

#include <iostream>
#include <bits/stdc++.h>
#include <sstream>
#include <string>
using namespace std;

int main() {
    string s;
    vector<string> v;
    getline(cin, s);
    for (int i=0; i<s.size();i++) {
        if('a'<=s[i]&&s[i]<='z' || 'A'<=s[i]&&s[i]<='Z' ){
            continue;
        }else {
            s[i] = ' ';
        }
    }
    stringstream ss(s);
    string t;
    while(getline(ss, t, ' ')){
        if (t.size()!=0) {
            v.push_back(t);
        }
    }
    for(int i=v.size()-1;i>0;i--){
        cout<<v[i]<<" ";
    }
    cout << v[0]<<endl;
}
// 64 位输出请用 printf("%lld")