题目
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, like “Google”. Otherwise, we define that this word doesn’t use capitals in a right way.
解题思路
如果第一个字母是大写，如果只有一个字母为True，否则后面全大写或全小写，如果第一个字母是小写，则都要是小写
代码
class Solution:
def detectCapitalUse(self, word: str) -> bool:
return word.isupper() or word.islower() or word.istitle()
class Solution:
def detectCapitalUse(self, word: str) -> bool:
if word[0].isupper():
if len(word)==1:
return True
else:
if word[1].isupper():
for s in word[1:]:
if not s.isupper():
return False
else:
for s in word[1:]:
if s.isupper():
return False
else:
for s in word[1:]:
if s.isupper():
return False
return True
