Leetcode 520. Detect Capital

Seawolf

1. Given a word, you need to judge whether the usage of capitals in it is right or not.
   
2. 
   
3. We define the usage of capitals in a word to be right when one of the following cases holds:
   
4. 
   
5. All letters in this word are capitals, like "USA".
   
6. All letters in this word are not capitals, like "leetcode".
   
7. Only the first letter in this word is capital, like "Google".
   
8. Otherwise, we define that this word doesn't use capitals in a right way.
   
9. 
   
10. 
    
11. Example 1:
    
12. 
    
13. Input: "USA"
    
14. Output: True
    
15. 
    
16. 
    
17. Example 2:
    
18. 
    
19. Input: "FlaG"
    
20. Output: False
    
21. 
    
22. 
    
23. Note: The input will be a non-empty word consisting of uppercase and lowercase latin letters

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1. class Solution:
   
2.     def detectCapitalUse(self, word: str) -> bool:
   
3.         small = False
   
4.         count_B = 0
   
5.         count_S = 0
   
6.         if 97 <= ord(word[0]) <= 122:
   
7.             small = True
   
8.         else:
   
9.             small = False
   
10.         for i in range(1, len(word)):
    
11.             if small == True:
    
12.                 if not 97 <= ord(word[i]) <= 122:
    
13.                     return False
    
14.                 else:
    
15.                     count_S += 1
    
16.             else:
    
17.                 if 97 <= ord(word[i]) <= 122:
    
18.                     count_S += 1
    
19.                 elif 65 <= ord(word[i]) <= 90:
    
20.                     count_B += 1
    
21.         if small == True:
    
22.             return count_S == len(word) - 1
    
23.         else:
    
24.             return count_S == len(word) - 1 or count_B == len(word) - 1

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