Mine passed all tests

class Checker implements Comparator<Player>{
    @Override
    public int compare(Player a, Player b){
        if (a.score == b.score){
            return a.name.compareTo(b.name);//alphabetically
        } else {
            return b.score - a.score;//decreasing 
        }
    }
}

My answer:

class Checker implements Comparator<Player> {
    @Override
    public int compare(Player o1, Player o2) {
     return (o2.score == o1.score) ? o1.name.compareTo(o2.name) : o2.score - o1.score;
    }
}

Java solution - passes 100% of test cases

Make sure not to make the Checker class public.

class Checker implements Comparator<Player> {
    @Override
    public int compare(Player p1, Player p2) {
        if (p1.score == p2.score) {
            return p1.name.compareTo(p2.name);
        } else {
            return p2.score - p1.score;
        }
    }
}

From my HackerRank Java solutions.

Can somebody help me out with this error dump ?

Solution.java:41: error: no suitable method found for sort(Player[],Checker) Arrays.sort(player, checker); ^ method Arrays.sort(T#1[],int,int,Comparator) is not applicable (cannot instantiate from arguments because actual and formal argument lists differ in length) . . . . . . . 1 error

All tests passed ! class Checker {

Comparator<Player> desc = new Comparator<Player>() {

        @Override
        public int compare(Player p1, Player p2) {
            if(p2.score == p1.score){
                return p2.name.compareTo(p1.name);
            }else{
                return p2.score - p1.score;    
            }

    };

};

}