JavaComparator.java

// https://www.hackerrank.com/challenges/java-comparator/problem

import java.util.Arrays;
import java.util.Comparator;
import java.util.Scanner;

public class JavaComparator {
 public static void main(String[] args) {
 Scanner scan = new Scanner(System.in);
 int n = scan.nextInt();

 Player[] player = new Player[n];
 Checker checker = new Checker();

 for(int i = 0; i < n; i++){
 player[i] = new Player(scan.next(), scan.nextInt());
 }
 scan.close();

 Arrays.sort(player, checker);
 for(int i = 0; i < player.length; i++){
 System.out.printf("%s %s\n", player[i].name, player[i].score);
 }
 }

 private static class Checker implements Comparator<Player> {
 @Override
 public int compare(Player first, Player second) {
 return first.score == second.score
 ? first.name.compareTo(second.name)
 : Integer.compare(second.score, first.score);

 }
 }

 private static class Player{
 String name;
 int score;

 Player(String name, int score){
 this.name = name;
 this.score = score;
 }
 }
}