题解 | #句子逆序#

#include <algorithm>
#include <iostream>
#include <string>
using namespace std;

int main() {
    int a, b;
    string s;
    while (getline(cin, s)) { // 注意 while 处理多个 case
        reverse(s.begin(), s.end());
        int front=0,end=0;
        string out;
        while (end!=s.size()+1) {
            if (s[end] == ' ' || end==s.size()) {
                string ss=s.substr(front,end-front);
                
                reverse(ss.begin(),ss.end());
                // cout<<ss<<endl;
                out=out+ss+" ";
                
                front=end+1;
            }
            end++;
        }
        cout<<out;
    }
}
// 64 位输出请用 printf("%lld")