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Count Vowel Substrings of a String

A substring is a contiguous (non-empty) sequence of characters within a string.

A substring is a contiguous (non-empty) sequence of characters within a string.

A vowel substring is a substring that only consists of vowels ('a', 'e', 'i', 'o', and 'u') and has all five vowels present in it.

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

Count Vowel Substrings of a String diagram

Example 1

Input: word = "aeiouu"

Output: 2

Explanation: The vowel substrings of word are as follows (underlined): - "aeiouu" - "aeiouu"

Example 2

Input: word = "unicornarihan"

Output: 0

Explanation: Not all 5 vowels are present, so there are no vowel substrings.

Example 3

Input: word = "cuaieuouac"

Output: 7

Explanation: The vowel substrings of word are as follows (underlined): - "cuaieuouac" - "cuaieuouac" - "cuaieuouac" - "cuaieuouac" - "cuaieuouac" - "cuaieuouac" - "cuaieuouac"

Constraints

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

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