345. Reverse Vowels of a String

• Total Accepted: 30572
• Total Submissions: 84744
• Difficulty: Easy

 

Write a function that takes a string as input and reverse only the vowels of a string.

Example 1:

Given s = "hello", return "holle".

Example 2:

Given s = "leetcode", return "leotcede".

 

思路：只交换元音字母。元音字母有a,e,i,o,u，不要忘了A,E,I,O,U。

 

 

代码：

1 class Solution { 2 public: 3     string reverseVowels(string s) { 4         string str="aeiouAEIOU"; 5         int i=0,j=s.size()-1; 6         while(i