Решение задачи 5

src/com/school/faang/hashset/задача_5/Solution.java

@@ -1,7 +1,93 @@
 package com.school.faang.hashset.задача_5;
 
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Objects;
+import java.util.Set;
+
 public class Solution {
     public static void main(String[] args) {
+        GameLobby gameLobby = new GameLobby(new HashSet<>(), new ArrayList<>());
+
+        gameLobby.addPlayer("Gunner");
+        gameLobby.addPlayer("Gunner");
+        gameLobby.addPlayer("Sniper003");
+        gameLobby.addPlayer("Sniper2000");
+        gameLobby.addPlayer("GodKiller");
+
+        gameLobby.displayPlayers();
+        System.out.println(gameLobby.hasPlayer("Gunner"));
+
+        gameLobby.removePlayer("Sniper003");
+
+        gameLobby.displayPlayers();
+    }
+}
+
+class Player {
+    private String nickname;
+    private String status = "не готов";
+
+    public Player(String nickname) {
+        this.nickname = nickname;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(nickname);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (obj == null) {
+            return false;
+        }
+        Player player = (Player) obj;
+
+        return nickname.equals(player.nickname);
+    }
+
+    public String getNickname() {
+        return nickname;
+    }
 
+    public String getStatus() {
+        return status;
     }
 }
+
+class GameLobby {
+    private Set<Player> players;
+    private List<Player> playerJoinOrder;
+
+    public GameLobby(Set<Player> players, List<Player> playerJoinOrder) {
+        this.players = new HashSet<>();
+        this.playerJoinOrder = new ArrayList<>();
+    }
+
+    void addPlayer(String nickname) {
+        Player player = new Player(nickname);
+        if (players.add(player)){
+            playerJoinOrder.add(player);
+        }
+    }
+
+    void removePlayer(String nickname) {
+        Player player = new Player(nickname);
+        if (players.remove(player)){
+            playerJoinOrder.remove(player);
+        }
+    }
+
+    boolean hasPlayer(String nickname) {
+        Player player = new Player(nickname);
+        return playerJoinOrder.contains(player);
+    }
+
+    void displayPlayers() {
+        for (Player player : playerJoinOrder) {
+            System.out.println(player.getNickname() + " "+ player.getStatus());
+        }
+    }
+}