private List<Company> createCompanies(Random r) {
List<Company> result = new ArrayList<Company>();
for (int i = 0; i < 50; i++) {
Company com = new Company(String.valueOf(i), "Company " + (i + 1));
com.setFocusedSectors(new ArrayList<Sector>());
Set<Person> uniqueWorkers = new HashSet<Person>();
for (int j = 0; j < r.nextInt(20); j++) {
Person worker = persons.get(r.nextInt(persons.size()));
worker.getCompanies().add(com);
uniqueWorkers.add(worker);
}
com.setWorkers(new ArrayList<Person>(uniqueWorkers));
result.add(com);
}
return result;
}
