// Task 1
        {
            System.out.println(patientList.stream().sorted((o1, o2) -> o2.getAge() - o1.getAge()).collect(Collectors.toList()));

            System.out.println(patientList.stream().filter(patient -> patient.getDiagnosis().equals(Diagnosis.ANGINA)).collect(Collectors.toList()));

            System.out.println(patientList.stream().sorted(Comparator.comparing(Patient::getDiagnosis)).sorted(Comparator.comparing(Patient::getName)).collect(Collectors.toList()));

            System.out.println(patientList.stream().sorted(Comparator.comparing(Patient::getAge)).skip(0).limit(4).collect(Collectors.toList()));

            System.out.println(patientList.stream().distinct().collect(Collectors.toList()));

            System.out.println(patientList.stream().filter(patient -> patient.getName().startsWith("I")).collect(Collectors.toList()));

            System.out.println(patientList.stream().min(Comparator.comparing(Patient::getAge)));

            List<Patient> youngPatients = (patientList.stream().filter(patient -> patient.getAge() < 18).filter(patient -> patient.getDiagnosis().equals(Diagnosis.BRONCHITIS)).collect(Collectors.toCollection(ArrayList::new)));

            System.out.println(youngPatients);

            List<Patient> tmp1 = (patientList.stream().filter(patient -> patient.getName().contains("Petrov")).sorted(Comparator.comparing(Patient::getName)).collect(Collectors.toCollection(ArrayList::new)));

            System.out.println(tmp1);

            System.out.println(catalog.entrySet().stream().filter(a -> a.getKey() > 3).collect(Collectors.toList()));
        }