Count the Vowels Without Using Loops

Given a string (s), count and print the number of vowels present in it. The vowels are (a, e, i, o, u) and the count is case-insensitive. You must not use any explicit looping constructs such as for, while, or do-while in your solution. Instead, you can use recursion or other functional techniques to traverse the string.

Input is provided via standard input (stdin), and the output, which is a single integer, must be printed to standard output (stdout).

inputFormat

A single line containing the string (s) for which the number of vowels needs to be counted.

outputFormat

Output a single integer that denotes the number of vowels in the input string.## sample

Hello World

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