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Original Question

Hey! Just a quick request — Can you change the PatientManagementSystem so that patients with lower priority numbers (like 1 being the most urgent) are placed ahead of those with higher numbers? That way it lines up with the triage chart. Also, if possible, please make sure the prioritizePatient() function and the waiting list automatically keep patients sorted by priority. Thanks! P.S: I tried replying to the tutor that helped for modification purposes but I couldn’t for some reason. // Class representing a Patient Node in the Doubly Linked List class Patient { int patientId; // Unique Patient ID String name; // Patient Name String reasonForVisit; // Reason for Visit int priority; // Priority Level (higher = more urgent) Patient next, prev; // Pointers to the next and previous patient in the list // Constructor to initialize a new patient node public Patient(int patientId, String name, String reasonForVisit, int priority) { this.patientId = patientId; this.name = name; this.reasonForVisit = reasonForVisit; this.priority = priority; this.next = this.prev = null; // Initially, no links } } // Class for the Patient Management System class PatientManagementSystem { private Patient head, tail; // Head and Tail for the main waiting list private Patient historyHead, historyTail; // Head and Tail for patient history // Function to add a new patient to the waiting list public void addPatient(int patientId, String name, String reasonForVisit, int priority) { Patient newPatient = new Patient(patientId, name, reasonForVisit, priority); if (head == null) { // If the list is empty, the new patient is both head and tail head = tail = newPatient; } else { // Add new patient at the end tail.next = newPatient; newPatient.prev = tail; tail = newPatient; } System.out.println(“Added Patient: ” + name); } // Function to prioritize a patient (move to the front of the list) public void prioritizePatient(int patientId) { Patient current = head; // Find the patient in the list while (current != null && current.patientId != patientId) { current = current.next; } if (current == null) { System.out.println(“Patient not found!”); return; } if (current == head) { System.out.println(“Patient is already at the front!”); return; } // Remove current from its position if (current.prev != null) { current.prev.next = current.next; } if (current.next != null) { current.next.prev = current.prev; } if (current == tail) { tail = current.prev; } // Move patient to the front current.next = head; head.prev = current; current.prev = null; head = current; System.out.println(“Prioritized Patient: ” + current.name); } // Function to attend a patient (remove from waiting list and move to history) public void attendPatient() { if (head == null) { System.out.println(“No patients in the queue!”); return; } Patient attended = head; // The patient at the front is attended head = head.next; if (head != null) { head.prev = null; } else { tail = null; // If the list becomes empty } // Move the patient to history list attended.next = null; if (historyHead == null) { historyHead = historyTail = attended; } else { historyTail.next = attended; attended.prev = historyTail; historyTail = attended; } System.out.println(“Attended Patient: ” + attended.name); } // Function to display the current waiting list public void viewWaitingList() { if (head == null) { System.out.println(“\nNo patients in the waiting list.”); return; } Patient current = head; System.out.println(“\nCurrent Waiting List:”); while (current != null) { System.out.println(“ID: ” + current.patientId + “, Name: ” + current.name + “, Priority: ” + current.priority); current = current.next; } } // Function to display the patient history public void viewPatientHistory() { if (historyHead == null) { System.out.println(“\nNo patient history records found.”); return; } Patient current = historyHead; System.out.println(“\nPatient History:”); while (current != null) { System.out.println(“ID: ” + current.patientId + “, Name: ” + current.name + “, Reason: ” + current.reasonForVisit); current = current.next; } } } // Main class to test the Patient Management System public class Clinic { public static void main(String[] args) { // Create a new patient management system PatientManagementSystem system = new PatientManagementSystem(); // Adding patients system.addPatient(1, “John Doe”, “Flu”, 2); system.addPatient(2, “Jane Smith”, “Headache”, 1); system.addPatient(3, “Alice Brown”, “Emergency”, 5); // Display initial waiting list system.viewWaitingList(); // Prioritizing a patient system.prioritizePatient(3); // Move Alice to the front system.viewWaitingList(); // Attending a patient system.attendPatient(); // Attend Alice system.viewWaitingList(); // Viewing patient history system.viewPatientHistory(); } }

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