Question

//USE JAVA FOR RECURSION OF FOLLOWING

Ask the user to enter a word, and then send it to a method which recursively creates a new string with an "*" place between each character. addAsterisks("welcome") → "w*e*l*c*o*m*e"

addAsterisks ("resursion") → "r*e*c*u*r*s*i*o*n"

addAsterisks(“z”) → "z"

addAsterisks ("fun") → "f*u*n

Answer 1

public class AddAsterisks {

    public static String addAsterisks(String s) {
        if (s.length() <= 1) {
            return s;
        } else {
            return s.charAt(0) + "*" + addAsterisks(s.substring(1));
        }
    }

    public static void main(String[] args) {
        System.out.println(addAsterisks("recursion"));
        System.out.println(addAsterisks("z"));
        System.out.println(addAsterisks("fun"));
    }
}