Write a recursive, boolean -valued method , containsVowel, that accepts a string and returns true if the string contains a vowel. A string contains a vowel if: The first character of the string is a vowel, or The rest of the string (beyond the first character) contains a vowel
LANGUAGE: JAVA
CHALLENGE:
Write a recursive, boolean -valued method , containsVowel, that accepts a string and returns true if the string contains a vowel.
A string contains a vowel if:
The first character of the string is a vowel, or
The rest of the string (beyond the first character) contains a vowel
SOLUTION:
public boolean containsVowel(String sentence){
if (sentence.isEmpty()) return false;
if (sentence.charAt(0) == 'a' || sentence.charAt(0) == 'e' || sentence.charAt(0) == 'i' || sentence.charAt(0) == 'o'
|| sentence.charAt(0) == 'u' || sentence.charAt(0) == 'A' || sentence.charAt(0) == 'E' || sentence.charAt(0) == 'I'
|| sentence.charAt(0) == 'O' || sentence.charAt(0) == 'U') return true;
else return containsVowel(sentence.substring(1,sentence.length()));
}