Finding repeated words on a string and counting the repetitions

Question

I need to find repeated words on a string, and then count how many times they were repeated. So basically, if the input string is this:

String s = \"House, House         


        

Answer 1

    public static void main(String[] args){
    String string = "elamparuthi, elam, elamparuthi";
    String[] s = string.replace(" ", "").split(",");
    String[] op;
    String ops = "";

    for(int i=0; i<=s.length-1; i++){
        if(!ops.contains(s[i]+"")){
            if(ops != "")ops+=", "; 
            ops+=s[i];
        }

    }
    System.out.println(ops);
}