【LeetCode】345. Reverse Vowels of a String

版权声明：本文为博主原创文章，请尊重原创，转载请注明原文地址和作者信息！ https://blog.csdn.net/zzc15806/article/details/82494977

class Solution:
    # 双指针遍历
    def reverseVowels(self, s):
        """
        :type s: str
        :rtype: str
        """
        vowels = ['a','o','e','i','u','A','O','E','I','U']
        s = list(s)
        left, right = 0, len(s)-1
        while left < right:
            if s[left] in vowels and s[right] in vowels:
                s[left], s[right] = s[right], s[left]
                left += 1
                right -= 1
            if s[left] not in vowels:
                left += 1
            if s[right] not in vowels:
                right -= 1
        return ''.join(s)


class Solution:
    def reverseVowels(self, s):
        """
        :type s: str
        :rtype: str
        """
        vowels = re.findall('(?i)[aeiou]', s)
        return re.sub('(?i)[aeiou]', lambda m: vowels.pop(), s)