Question: Computer programming in JAVA. ER_Patient.java AND NoSuchException.java are completed. The assignment is to be completed using the Vector Class. I need help with Heap.java and
Computer programming in JAVA. ER_Patient.java AND NoSuchException.java are completed. The assignment is to be completed using the Vector Class. I need help with Heap.java and PriorityQueue.java.
Below are the instructions as well as the code and my own code. Please just help edit my code, keep the Vector as it is as we cannot use arrays to complete the assignment.
ER_Patient.java :
/*
* CSC115 Assignment 6 : Emergency Room
* ER_Patient.java
* Created for use by CSC115 Summer 2018.
*/
import java.time.LocalTime;
import java.util.Random;
/**
* ER_Patient is a class that represents a patient who signs into the Emergency Room
* to be assessed and treated by an ER Physician.
* Each patient has :
*
- an Id number, either accepted or generated,
- a time of admission, either accepted or generated,
- and a specific symptomCategory that determines the priority number [1,4], inclusive,
* calculated within the program.
*
*
*
*
*/
public class ER_Patient implements Comparable
/* Static variables necessary to randomize Id numbers */
private static final int numDigits = 2;
private static int range = (int)(Math.pow(10,numDigits));
private static boolean[] used = new boolean[range];
private static int[] fresh;
private static int currIndex = 0;
private static boolean open = false;
/* instance variables */
private String patientId;
private String symptomCategory;
private int priorityNum;
private LocalTime admitTime;
/**
* Create ER_Patient admission information.
* @param admitTime The time given in hh:mm:ss format.
* @param patientNumber A number given to the patient.
* If this number is unique, then it is applied to the Patient Id.
* If it is not unique, then a random unique Id is attributed to the
* patient.
* @param symptomCategory The category that determines the priority.
* Acceptable categories are:
- Life-threatening
- Chronic
- Major fracture
- Walk-in
*
*
*
*
*
*/
public ER_Patient(String admitTime, int patientNumber, String symptomCategory) {
if (!open) {
createUniqueIdList();
}
this.admitTime = LocalTime.parse(admitTime);
patientId = setUniqueId(patientNumber);
this.symptomCategory = symptomCategory;
priorityNum = determinePriority();
}
/**
* Create ER_patient admission information.
* A patient Id number is generated.
* @param admitTime The time given in hh:mm:ss format.
* @param symptomCategory The category that determines the priority.
* Acceptable categories are:
- Life-threatening
- Chronic
- Major fracture
- Walk-in
*
*
*
*
*
*/
public ER_Patient(String admitTime, String symptomCategory) {
if (!open) {
createUniqueIdList();
}
this.admitTime = LocalTime.parse(admitTime);
patientId = createUniqueId();
this.symptomCategory = symptomCategory;
priorityNum = determinePriority();
}
/**
* Create ER_patient dmission information.
* A patient Id number is generated.
* The admission time is the current time.
* @param symptomCategory The category that determines the priority.
* Acceptable categories are:
- Life-threatening
- Chronic
- Major fracture
- Walk-in
*
*
*
*
*
*/
public ER_Patient(String symptomCategory) {
if (!open) {
createUniqueIdList();
}
admitTime = LocalTime.now();
admitTime = admitTime.minusNanos(admitTime.getNano());
patientId = createUniqueId();
this.symptomCategory = symptomCategory;
priorityNum = determinePriority();
}
/*
* Given the symptom, assigns a priority number.
* Assumes that the
*/
private int determinePriority() {
switch(symptomCategory) {
case "Life-threatening":
return 1;
case "Chronic":
return 2;
case "Major fracture":
return 3;
case "Walk-in":
return 4;
default:
throw new NoSuchCategoryException("Category does not exist.");
}
}
/**
* @return The id number of the patient.
*/
public String getId() {
return patientId;
}
/**
* @return The priority number of the patient.
*/
public int getPriority() {
return priorityNum;
}
/**
* @return The patient's symptom category.
*/
public String getSymptomCategory() {
return symptomCategory;
}
/**
* Determines equality: If this patient has the same id, then
* equality is true.
* @param other The patient to compare to this one.
* @return True if the paitent id of this patient is the same
* as the other pateint's id.
*/
public boolean equals(ER_Patient other) {
return this.patientId.equals(other.patientId);
}
/**
* Determines whether this patient should be seen before the other patient.
* Order is determined first by priority number and secondarily by the admission
* time.
* @param other The patient to compare to this one.
* @return
- a number less than 0 if this patient has a higher priority,
- 0 if the priorities are equal (which should only happen if it is the same patient), or
- a number greater than 0 if the other patient has a higher priority.
*
*
*
*
* @throws ClassCastException if the parameter object is not of type ER_Patient.
*/
public int compareTo(ER_Patient other) {
int priorityDiff = this.priorityNum - other.priorityNum;
if (priorityDiff != 0) {
return priorityDiff;
} else {
return this.admitTime.compareTo(other.admitTime);
}
}
/**
* The string representation of a Patient.
* Format:
*
* patientId: priorityNum admission time symptomCategory
*
* @return Information about this patient as a String.
*/
public String toString() {
StringBuilder s = new StringBuilder(range+2+2+8+symptomCategory.length());
s.append(patientId+": "+priorityNum+" ");
s.append(admitTime+" ");
s.append(symptomCategory);
return s.toString();
}
/**
* A private method that shuffles an array of integers between 0 and range.
* Used to determine the unique values.
* This method is only called once for the first time a ER_Patient is created.
*/
private void createUniqueIdList() {
fresh = new int[range];
for (int i=0; i fresh[i] = i; } // Implement the Durstenfeld shuffle Random rand = new Random(); int r, tmp; for (int i=range-1; i>0; i--) { r = rand.nextInt(i+1); tmp = fresh[i]; fresh[i] = fresh[r]; fresh[r] = tmp; } open = true; } /** * A private method that sets the number as the patient id, after * checking that it has not been used before. * If it has, then a new number is generated instead. */ private String setUniqueId(int num) { if (num range-1) { return createUniqueId(); } if (used[num]) { return createUniqueId(); } return createId(num); } /** * A private method that creates a unique patient id number. */ private String createUniqueId() { while (currIndex currIndex++; } if (currIndex >= fresh.length) { throw new RuntimeException("Cannot create the new ER_Patient: No unique id numbers available."); } return createId(fresh[currIndex++]); } /** * Converts the checked number into a String starting with 'P'. */ private String createId(int num) { StringBuilder sb = new StringBuilder(numDigits+1); sb.append('P'); used[num] = true; int base = range/10; int currDigit; while (base >= 1) { currDigit = num/base; if (currDigit != 0) { num %= 10; } sb.append(currDigit); base /= 10; } return sb.toString(); } /** * The unit tester for this class. * @param args Not used. */ public static void main(String[] args) { ER_Patient[] patients = new ER_Patient[5]; String[] complaints = {"Walk-in", "Life-threatening","Chronic","Major fracture", "Chronic"}; for (int i=0; i patients[i] = new ER_Patient(complaints[i]); // spread out the admission times by 1 second try { Thread.sleep(1000); } catch (InterruptedException e) { System.out.println("sleep interrupted"); return; } } System.out.println("Patients waiting:"); for (int i=0; i System.out.println(patients[i]); } } } __________________________________________________________________________________________________ NoSuchCategoryException.java : /* * CSC115 Assignment 5 : Emergency Room * NoSuchCategoryException.java * Created for use by CSC115 Summer 2018. */ /** * An runtime exception indicating that a particular category was not found * for a process to continue. * In this context, it is used to indicate that a * particular ER_Patient symptom was not recognized and an ER priority number * cannot be attributed to the patient. */ public class NoSuchCategoryException extends RuntimeException { /** * Create an exception. * @param msg The message associated with this exception. */ public NoSuchCategoryException(String msg) { super(msg); } /** * Create a default exception. */ public NoSuchCategoryException() { super(); } } __________________________________________________________________________________________________ Heap.java PLEASE HELP. Keep the vector class but feel free to edit the methods import java.util.NoSuchElementException; import java.util.Vector; import java.util.Comparator; /* * The shell of the class, to be completed as part * of CSC115 Assignment 5: Emergency Room. */ public class Heap private Vector private Comparator super E> comparator; public Heap() { heapArray = new Vector } public int size(){ return heapArray.size(); } public boolean heapIsEmpty(){ if (heapArray.size() == 0){ return true; } else return false; } public void heapInsert(E item) throws NoSuchElementException { heapArray.addElement(item); trickleUp(item); } private void trickleUp(E item){ int index = heapArray.size()-1; int parent = (index -1) / 2 ; while (parent >=0 && compareItems(heapArray.get(index), heapArray.get(parent)) E temp = heapArray.get(parent); heapArray.set(parent, heapArray.get(index)); heapArray.set(index,temp); index = parent; parent = (index -1) / 2; } } public E getRootItem() { return heapArray.get(0); } public E heapDelete(){ E rootItem = null; int index; if (!heapIsEmpty()){ rootItem = heapArray.get(0); index = heapArray.size() - 1; heapArray.set (0, heapArray.get(index)); heapArray.remove (index); heapRebuild(0); } return rootItem; } private void heapRebuild (int root){ int child = 2*root +1; if (child int rightChild = child +1; if ( (rightChild child = rightChild; } } if (compareItems(heapArray.get(root), heapArray.get(child))>0){ E temp = heapArray.get(root); heapArray.set(root,heapArray.get(child)); heapArray.set(child,temp); heapRebuild(child); } } public int compareItems(E item1, E item2){ if (comparator == null){ return (item1).compareTo(item2); } else { return comparator.compare(item1, item2); } } public static void main (String [] args){ } } __________________________________________________________________________________________________ PriorityQueue.java : Again, feel free to edit. import java.util.NoSuchElementException; /* * The shell of the class, to be completed as part of the * CSC115 Assignment 5 : Emergency Room */ public class PriorityQueue private Heap public PriorityQueue() { heap = new Heap } public boolean pqIsEmpty(){ return heap.heapIsEmpty(); } public void pqInsert ( E newItem) { heap.heapInsert (newItem); } public E pqDelete () { return heap.heapDelete(); } public static void main(String[] args) { } } __________________________________________________________________________________________________
Step by Step Solution
There are 3 Steps involved in it
Get step-by-step solutions from verified subject matter experts
Study Help