Count Vowel Substrings of a String

Difficulty: Easy
Source: LeetCode

Description

Given a string word, return the number of vowel substrings in word.

A vowel substring is a contiguous substring that:

• Only consists of vowels ('a', 'e', 'i', 'o', 'u')
• Contains all five vowels at least once

Examples

Input: word = "aeiouu"
Output: 2
Explanation: The vowel substrings are "aeiou" and "aeiouu"

Input: word = "unicornarihan"
Output: 0
Explanation: Not all 5 vowels are present, so there are no vowel substrings

Code

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