LeetCode 1832. 判断句子是否为全字母句

示例 1：
输入：sentence = "thequickbrownfoxjumpsoverthelazydog"
输出：true
解释：sentence 包含英语字母表中每个字母至少一次。
示例 2：
输入：sentence = "leetcode"
输出：false

class Solution:
    def checkIfPangram(self, sentence: str) -> bool:
        # 用Counter或者Set，如果==26个字母就True
        from collections import Counter
        count = Counter(sentence)
        # count = set(sentence)
        if len(count) == 26:
            return True
        else:
            return False
if __name__ == '__main__':
    sentence = "thequickbrownfoxjumpsoverthelazydog"
    sentence = "leetcode"
    ret = Solution().checkIfPangram(sentence)
    print(ret)