[LeetCode&Python] Problem 520. Detect Capital-优快云博客

本文介绍了一个算法，用于判断一个给定单词的大小写使用是否符合规范。规范包括：单词全部为大写，如USA；全部为小写，如leetcode；或者仅首字母大写，如Google。除此之外的情况被认为是不正确的。

Given a word, you need to judge whether the usage of capitals in it is right or not.

We define the usage of capitals in a word to be right when one of the following cases holds:

All letters in this word are capitals, like "USA".
All letters in this word are not capitals, like "leetcode".
Only the first letter in this word is capital if it has more than one letter, like "Google".

Otherwise, we define that this word doesn't use capitals in a right way.

Example 1:

Input: "USA"
Output: True

Example 2:

Input: "FlaG"
Output: False

Note: The input will be a non-empty word consisting of uppercase and lowercase latin letters.

class Solution(object):
    def detectCapitalUse(self, word):
        """
        :type word: str
        :rtype: bool
        """
        n=len(word)
        if word[0].isupper():
            if n>1:
                if word[1].isupper():
                    for i in word[2:]:
                        if i.islower():
                            return False
                    return True
                else:
                    for i in word[2:]:
                        if i.isupper():
                            return False
                    return True
            else:
                return True
        else:
            if n>1:
                for i in word[1:]:
                    if i.isupper():
                        return False
                return True
            else:
                return True

转载于:https://www.cnblogs.com/chiyeung/p/9903065.html