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LeetCode solutions

2654. Count the Number of Vowel Strings in Range

My accepted Python solution to LeetCode problem 2654, Count the Number of Vowel Strings in Range, running in 3ms.

  • Difficulty: Easy
  • Python
  • Runtime 3ms
  • Memory 17.7MB

Read the problem on LeetCode View on GitHub

The problem statement is LeetCode’s and stays on their site. What follows is my accepted solution.

Python

Accepted on LeetCode — runtime 3ms, memory 17.7MB, accepted 2025-12-31.

python
class Solution:
    def vowelStrings(self, words: List[str], left: int, right: int) -> int:
        vowels = {'a', 'e', 'i', 'o', 'u'}
        count = 0
        
        for i in range(left, right + 1):
            word = words[i]
            if word[0] in vowels and word[-1] in vowels:
                count += 1
        
        return count

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