050 - Accumulator Method Practice 6

Write a method header on line two with the following specs:

Returns: a String Name: keepVowels Parameters: a String called s Purpose: create a string that is composed of all the vowels in the string, in the same order that they appear. see below examples for clarity.

 

Examples:

• keepVowels("hello") ==> "eo"
• keepVowels("how do i internets") ==> "ooiiee"

---

Solution

class Main {
    public static String keepVowels(String s)
    {
        char[] arr = {'a','e','i','o','u'};
        s=s.toLowerCase();
        String result="";
        for(int i=0;i<s.length();i++) {
            for(int j=0;j<arr.length;j++) {
                if(s.charAt(i)==arr[j]) {
                    result+=arr[j];
                }
            }
        }
        return result;
    }
    
    //test case below (dont change):
    public static void main(String[] args){
        System.out.println(keepVowels("hello")); //eo
        System.out.println(keepVowels("how do i internets")); //ooiiee
    }
}