Question

Suppose there is a hospital with a waiting room filled with several patients. Patients are prioritized based on how severe their casualities are. For instance, car crash andgun shot patients are priority level 1, so they go straight to the front of the queue. Patients with heavy chest pain or mild heart attacks are priority level 2, and so on.
Create a hospital that manages patients in a list. Implement it using the LinkedList API. (You may import ArrayList or List, but please do not import any other packages.) See Base_A11Q2.java for a starting place. In particular, see the HospitalADT interface which contains a description of the methods required in the to do list. Create a Patient class that implements Comparable and contains the name of the patient, the casualty of the patient, and the priority level. Make getters and a compareTo method that passes in another Patient and compares the priority levels of the patients. This method should compare the priority levels of the patients and return -1 if the first patient has a lower priority level than the second patient, 0 if the priority levels of the patients are equal, and 1 if the patient has a higher priority level than the second patient.

All patients are added into the hospital list. The highest priority task in a to do list is the task with the lowest priority level. When removing patients, your hospital list should return the lowest priority patient. Patients should be removed from the queue when a doctor lets each patient in for examination.

The attached file (Base_HW11Q2.java) already contains a driver that creates three Patient objects, adds them to a hospital list, and removes/displays them one by one. [25 points]

Sample Output:

import java.util.LinkedList;

public class Base_HW11Q2 {

    static class Patient implements Comparable<Patient> {
        //TODO: complete class
    }

    static interface HospitalADT {

        /**
         * Adds one patient to the hospital.
         * @param p  the patient to be added to the hospital.
         */
        public void add(Patient p);

        /**
         * Removes and returns the highest priority patient in the hospital.
         * @return the highest priority patient in the hospital.
         */
        public Patient remove();

        /**
         * Returns true if this hospital contains no patients.
         * @return true if this hospital is empty.
         */
        public boolean isEmpty();

        /**
         * Returns the number of patients in this hospital.
         * @return the integer representation of the size of the hospital.
         */
        public int size();
    }

    static class Hospital implements HospitalADT {
        //TODO: complete class
    }

    public static void main(String[] args) {
        Hospital hospital = new Hospital();
        Patient p1 = new Patient("Martha Reynolds", "heavy chest pain", 2);
        Patient p2 = new Patient("Dennis Johnson", "ear ache", 3);
        Patient p3 = new Patient("John Smith", "car crash", 1);
        hospital.add(p1);
        hospital.add(p2);
        hospital.add(p3);
        System.out.println(hospital.remove());
        System.out.println(hospital.remove());
        System.out.println(hospital.remove());
    }
}

Answer 1

import java.util.ArrayList;

public class Base_HW11Q2 {

  
  

    static class Patient implements Comparable<Patient> {
       String name;
       String casualty;
       int level;
      
       public Patient(String name,String casualty, int level ) {
           this.name = name;
           this.casualty = casualty;
           this.level =level;
           // TODO Auto-generated constructor stub
       }

       @Override
       public int compareTo(Patient arg0) {
           // TODO Auto-generated method stub
           return 0;
       }
        //TODO: complete class
      
       public String toString(){
           return "Patient[ Name: " + name + " Casulality: " + casualty + " Level: " + level + " ]";
       }
      
    }

    static interface HospitalADT {

        /**
         * Adds one patient to the hospital.
         * @param p the patient to be added to the hospital.
         */
        public void add(Patient p);

        /**
         * Removes and returns the highest priority patient in the hospital.
         * @return the highest priority patient in the hospital.
         */
        public Patient remove();

        /**
         * Returns true if this hospital contains no patients.
         * @return true if this hospital is empty.
         */
        public boolean isEmpty();

        /**
         * Returns the number of patients in this hospital.
         * @return the integer representation of the size of the hospital.
         */
        public int size();
    }

    static ArrayList<Patient> list = new ArrayList<Patient>();
    static class Hospital implements HospitalADT {

       @Override
       public void add(Patient p) {
           // TODO Auto-generated method stub
           list.add(p);
          
       }

       @Override
       public Patient remove() {
           // TODO Auto-generated method stub
           if(list.size()>0)
           return list.remove(0);
           else
               return null;
       }

       @Override
       public boolean isEmpty() {
           // TODO Auto-generated method stub
           return list.isEmpty();
       }

       @Override
       public int size() {
           // TODO Auto-generated method stub
           return list.size();
       }
        //TODO: complete class
    }

    public static void main(String[] args) {
        Hospital hospital = new Hospital();
        Patient p1 = new Patient("Martha Reynolds", "heavy chest pain", 2);
        Patient p2 = new Patient("Dennis Johnson", "ear ache", 3);
        Patient p3 = new Patient("John Smith", "car crash", 1);
        hospital.add(p1);
        hospital.add(p2);
        hospital.add(p3);
        System.out.println(hospital.remove());
        System.out.println(hospital.remove());
        System.out.println(hospital.remove());
    }
}
=====

See Output

2 import java.util.ArrayList; <terminated> Base HW11Q2 [Java Application] /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/ Patient Name: Martha Reynolds Casulality: heavy chest pain Level: 2 ] Patient Name: Dennis Johnson Casulality: ear ache Level: 3 ] Patient Name: John Smith Casulality: car crash Level: 1] 4 public class Base_HW1102 static class Patient implements Comparable<Pati String name; String casualty; int level; 10 12 13 146 15 16 17 18 19 20 21e public Patient(String name, String casualty this. name = name ; this.casualtycasualty; this.level -level; // TODO Auto-generated constructor stub 2Override public int compareTo(Patient arg0) 23 24 25 26 27 /I TODO Auto-generated method stub return 0; TODO: complete class public String toString)E return "Patient Name: "nameCas 29 30 31 32 static interface HospitalADT 34e 35 * Adds one patient to the hospital. * @param p the patient to be added to the 37 38 39 40 41 public void add(Patient p);



Thanks, let me know if there is any concern.