054 - Accumulator Method String Practice 2

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

Returns: a String Name: thirdLetter Parameters: a String called s

 

Then complete the method by programming the following behavior

Returns every 3rd letter of the String s, starting the first letter. See below examples.

 

Examples:

• thirdLetter("hello there") ==> "hltr"
• thirdLetter("technology") ==> "thly"

---

Solution

 

class Main {
    public static String thirdLetter(String s)
    {
        String result=String.valueOf(s.charAt(0));
        for(int i=1;i<s.length();i++) {
            if(i%3==0) {
                result+=s.charAt(i);
            }
        }
        return result;
    }
    
    //test case below (dont change):
    public static void main(String[] args){
        System.out.println(thirdLetter("hello there")); //"hltr"
        System.out.println(thirdLetter("technology")); //"thly"
    }
}