getLikes

e com.lesia;

import java.lang.String;
import java.util.*;


public class Main {

    public static void main(String[] args) {
        String[] names = {"Lesia","Lesia", "Nastya", "Kolya", "Taras"};
        String likesDescription;
        likesDescription = getLikes(names);
        System.out.println(likesDescription);
    }

    public static String getLikes(String[] names){
        //convert array to set to remove duplicated elements
        List<String> listNames = Arrays.asList(names);
        Set<String> uniqueNames = new LinkedHashSet<String>(listNames);
        List<String> uniqueNamesList = new ArrayList<String>(uniqueNames);

        String result;

        if(uniqueNamesList.size()==0){
            result= "no likes for this post";
        }
       else if(uniqueNamesList.size()==1) {
            result = String.format("%s likes this post", uniqueNamesList.get(0));
        }
       else if (uniqueNamesList.size()==2) {
            result = String.format("%s and %s like this post", uniqueNamesList.get(0), uniqueNamesList.get(1));
        }
        else if(uniqueNamesList.size()==3) {
            result= String.format("%s, %s and %s like this post", uniqueNamesList.get(0), uniqueNamesList.get(1), uniqueNamesList.get(2));
        }
        else {
            result= String.format("%s, %s and %d  like this post", uniqueNamesList.get(0), uniqueNamesList.get(1), uniqueNamesList.size() - 2);
        }
        return result;
    }

}