Given a string str consisting of lowercase English alphabets, the task is to count the number of adjacent pairs of vowels.
Input: str = “abaebio”
(a, e) and (i, o) are the only valid pairs.
Input: str = “aeoui”
Approach: Starting from the first character of the string to the second last character, increment count for every character where str[i] as well as str[i + 1] are both vowels. Print the count in the end which is the required count of pairs.
Below is the implementation of the above approach:
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- First X vowels from a string
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- Modify the string such that it contains all vowels at least once
- Count strings with consonants and vowels at alternate position
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