345. Reverse Vowels of a String-反转字符串中的元音字母

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

Example 1:
Input: "hello"
Output: "holle"

Example 2:
Input: "leetcode"
Output: "leotcede"
Note:
The vowels does not include the letter "y".

Solution in python:

class Solution:
    def reverseVowels(self, s: str) -> str:
        vowels = ['a', 'o', 'e', 'i', 'u', 'A', 'O', 'E', 'I', 'U']
        s = list(s)
        i = 0
        j = len(s)-1
        while i < j:
            bool1 = s[i] in vowels
            bool2 = s[j] in vowels
            if bool1 and bool2:
                s[i], s[j] = s[j], s[i] 
                i += 1
                j -= 1
            elif bool1 and (not bool2):
                j -= 1
            elif (not bool1) and bool2:
                i += 1
            else:
                i += 1
                j -= 1
        return ''.join(s)