From 74749762324ffad4a74f7b4ad0497493044ca683 Mon Sep 17 00:00:00 2001
From: Kristian Sooklal <ksooklal@terpmail.umd.edu>
Date: Thu, 3 Oct 2019 10:14:35 -0400
Subject: [PATCH] Java Comparator Hackerrank Challenge

Add solution for https://www.hackerrank.com/challenges/java-comparator/problem
---
 java/JavaComparator/Solution.java | 55 +++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 java/JavaComparator/Solution.java

diff --git a/java/JavaComparator/Solution.java b/java/JavaComparator/Solution.java
new file mode 100644
index 0000000..2701cbb
--- /dev/null
+++ b/java/JavaComparator/Solution.java
@@ -0,0 +1,55 @@
+import java.util.*;
+
+class Checker implements Comparator<Player>{
+
+   
+    public int compare(Player a, Player b){
+        int comparison = 0;
+        if (a.score < b.score){
+            return 1;
+        } else if (a.score > b.score){
+            return -1;
+        } else {
+            if (a.name == null && b.name == null){
+                return 0;
+            } else if (a.name == null) {
+                return -1;
+            } else if (b.name == null){
+                return 1;
+            } else {
+                comparison = a.name.compareTo(b.name);
+                return comparison;
+            }
+        }
+    }
+}
+class Player{
+    String name;
+    int score;
+    
+    Player(String name, int score){
+        this.name = name;
+        this.score = score;
+    }
+}
+
+class Solution {
+
+    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);
+        }
+    }
+}