345.[LeetCode]Reverse Vowels of a String

题意：

我的思路：

class Solution {
public:
string reverseVowels(string s) {
//这里也可以使用set来排除aeiou
char ch[] = {'a','e','i','o','u','A','E','I','O','U'};
set<char> c(ch,ch+10);
string temp = "";
int size = s.size();
for(int i = 0; i<size; i++)
if(c.count(s[i]) == 1) {
temp = s[i]+temp;
s[i] = '~';
}
int j = 0;
for(int i = 0; i<size; i++)
if(s[i] == '~') {
s[i] = temp[j++];
}
return s;
}
};