2586. 统计范围内的元音字符串数

1.我的思路：枚举范围内的字符串

class Solution(object):
    def vowelStrings(self, words, left, right):
        """
        :type words: List[str]
        :type left: int
        :type right: int
        :rtype: int
        """
        count=0
        list=['a','e','i','o','u']
        for word in words[left:right+1]:
            if word[0] in list and word[len(word)-1] in list:
                count=count+1
        return count

2.ai提醒

本质没有变换，但是简化了代码

class Solution(object):
    def vowelStrings(self, words, left, right):
        """
        :type words: List[str]
        :type left: int
        :type right: int
        :rtype: int
        """
        count=0
        list1=['a','e','i','o','u']
        result=list(filter(lambda word:word[0] in list1 and word[len(word)-1] in list1, words[left:right+1]))
        return len(result)