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520. Detect Capital

String

Problem - Detect Capital

Easy

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".

Given a string word, return true if the usage of capitals in it is right.

 

Example 1:

Input: word = "USA"
Output: true

Example 2:

Input: word = "FlaG"
Output: false

 

Constraints:

  • 1 <= word.length <= 100
  • word consists of lowercase and uppercase English letters.

Solutions

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class Solution:
    def detectCapitalUse(self, word: str) -> bool:
        count = sum(char.isupper() for char in word)
        return count == 0 or count == len(word) or (count == 1 and word[0].isupper())

Submission Stats:

  • Runtime: 0 ms (100.00%)
  • Memory: 17.7 MB (45.73%)