Question

Write a function called which_vowels_present that takes a single string parameter. Complete the function to return a list of strings indicating which vowels (a, e, i, o, and u) are present in the provided string. The case of the vowels in the original string doesn't matter, but they should be lowercase when returned as part of the list. The order of the vowels in the list doesn't matter.

Answer 1

Answer:

import java.util.ArrayList;

import java.util.List;

public class Vowels {

   public static void main(String[] args) {

   String word = "I am David from Nigeria";

       System.out.println(which_vowels_present(word));

   }

   public static List which_vowels_present(String enteredWord){

       List<Character>list = new ArrayList<>();

       String word = enteredWord.toLowerCase();

       for (int i =0; i<word.length(); i++){

           if (word.charAt(i) == 'a' || word.charAt(i) == 'e' || word.charAt(i) == 'i'

                   || word.charAt(i) == 'o' || word.charAt(i) == 'u') {

               list.add(word.charAt(i));

           }

       }

       return list;

   }

}

Explanation:

• Using Java programming Language
• Import java.util.ArrayList; and java.util.List
• Create the method which_vowels_present which accepts a string parameter
• Within the method create a list object
• Use a for loop to iterate the string. within the for loop use an if statement to check individual characters of the string if any is a vowel, add it to the list
• return the list
• In the main method, create a test string, call the method and pass the string as parameter