题解 | #单词倒排#

#include <cctype>
#include <iostream>
#include <string>
using namespace std;
#include<vector>
#include <algorithm>
int main() {
    string input,result;
    getline(cin,input);
    vector<string> output;
    for(int i=0;i<input.size();++i){   
        if(isalpha(input[i])){
            int start = i;
            while(i<input.size() && isalpha(input[i])){
                ++i;
            }
            output.push_back(input.substr(start,i-start));
        }
    }
    reverse(output.begin(),output.end());
    for(const string& str:output){
        cout<<str<<' ';
    }
}