Python

def comparator(a, b):
    # First, sort by descending score.
    if a.score > b.score:
        return -1
    elif a.score < b.score:
        return 1
    else:
        # If scores are equal, sort by ascending name.
        if a.name < b.name:
            return -1
        elif a.name > b.name:
            return 1
        else:
            return 0

Write this stupid question in pyton is so confusing. "You must use a Checker class" but lock the code preventing you to use any other class beside Player. Someone need to edit the narrative of this problem.

C#

class Solution {

struct Player{
    public string name {get; set;}
    public int score {get; set;}

    public Player(string playerName, int playerScore){
        name = playerName;
        score = playerScore;
    }
}

class Checker : IComparer<Player>{
    public int Compare(Player a, Player b){
        if(b.score != a.score)
            return b.score.CompareTo(a.score);
        return a.name.CompareTo(b.name);
    }
}

static void Main(String[] args) {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution */

    int n = Convert.ToInt32(Console.ReadLine());
    var players = new Player[n];

    for (int i = 0; i < n; i++)
    {
        string[] input = Console.ReadLine().Split();
        players[i] = ( new Player { name = input[0], score = Convert.ToInt32(input[1])});
    }

    //var list = players.OrderByDescending(p => p.score).ThenBy(p => p.name);
    Array.Sort(players, new Checker());
    foreach(var player in players)
    {
        Console.WriteLine($"{player.name} {player.score}");
    }
    Console.ReadLine();
}

}

Java #

public int compare(Player a, Player b) {
       
    int ageComarator = Integer.valueOf(b.score).compareTo(a.score);
     if (ageComarator != 0) {
        return ageComarator;
     } else {
       return a.name.compareTo(b.name);
     }
    }

I do think that the prompt is very confunsing, it says a checker is being called, but you have to implement the checker yourself, and that the Comparator interface exists? It was really confusing.