08. Company Users

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String input = scanner.nextLine();

        LinkedHashMap<String, List<String>> companies = new LinkedHashMap<>();

        while (!input.equals("End")) {
            String [] data = input.split(" -> ");
            if(companies.containsKey(data[0])) {
                List<String> employees = companies.get(data[0]);
                if (!employees.contains(data[1]))
                    employees.add(data[1]);
            } else  {
                List<String> employees = new ArrayList<>();
                employees.add(data[1]);
                companies.put(data[0], employees);
            }
            input = scanner.nextLine();
        }

        companies.entrySet().stream().sorted(Map.Entry.comparingByKey())
                .forEach(company -> {
                    System.out.println(company.getKey());
                    company.getValue().forEach(employee -> System.out.println("-- " + employee));
                });
    }
}