问题描述

解决方案

class Solution {public:    string reverseVowels(string s) {        string vowels("aeiouAEIOU");        string::size_type begin=0;        string::size_type end=s.size();        while(begin!=string::npos)        {            begin=s.find_first_of(vowels,begin);            end=s.find_last_of(vowels,end);            if(begin>=end)  break;               swap(s[begin],s[end]);            ++begin;            --end;         }        return s;    }};