2063. Vowels of All Substrings
On This Page
class Solution:
def countVowels(self, word: str) -> int:
n = len(word)
return sum((i + 1) * (n - i) for i, c in enumerate(word) if c in 'aeiou')
class Solution:
def countVowels(self, word: str) -> int:
n = len(word)
return sum((i + 1) * (n - i) for i, c in enumerate(word) if c in 'aeiou')