Question

Write a recursive method, vowels, that returns the number of vowels in a string. Also, write a program to test your method.

(JAVA Code)

Answer 1

import java.util.Scanner;

public class Main {
        
        public static int vowels(String s) {
                
                int count = 0;
                s = s.toLowerCase();
                
                for(char c: s.toCharArray()) {
                        if("aeiou".contains(c + "")) {
                                count++;
                        }
                }
                
                return count;
                
        }

        public static void main(String[] args) {

                Scanner scnr = new Scanner(System.in);

                System.out.println("Enter your sentence: ");
                String s = scnr.nextLine();
                
                System.out.println("number of vowels: " + vowels(s));
                
                scnr.close();

        }

}