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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. class LinkedPatients {
  8. 	private PatientNode head = null;
  9. 	private int size = 0;
  10. 	private int lastArrival = 0;
  11.  
  12. 	public PatientNode getHead(){
  13. 		return head;
  14. 	}
  15.  
  16. 	public int getSize(){
  17. 		return size;
  18. 	}
  19.  
  20. 	public int getLastArrival(){
  21. 		return lastArrival;
  22. 	}
  23.  
  24. 	public void add(String name, int severity) {
  25. 		Patient patient;
  26.  
  27. 		lastArrival++;
  28. 		patient = new Patient(name, lastArrival, severity);
  29. 		PatientNode n = new PatientNode(patient, null);
  30.  
  31. 		if(head==null) {
  32. 			head = n;
  33. 			size++;
  34. 			return;
  35. 		} else if(n.data.getSeverity() > head.data.getSeverity()) {
  36. 			n.next = head;
  37. 			size++;
  38. 			head = n;
  39. 			return;
  40. 		}
  41.  
  42. 		PatientNode p = head;
  43. 		boolean added = false;
  44. 		while(p.next!=null && !added) {
  45. 			if(p.next.data.getSeverity() < severity) {
  46. 				n.next = p.next;
  47. 				p.next = n;
  48. 				added = true;
  49. 			} else if(p.next.data.getSeverity()== severity && p.next.data.getArrival() > lastArrival) {
  50. 				n.next = p.next;
  51. 				p.next = n;
  52. 				added = true;
  53. 			}
  54. 			p=p.next;
  55. 		}
  56. 		if(!added) {
  57. 			p.next = n;
  58. 		}
  59. 		size++;
  60. 	}
  61. }
  62.  
  63. class PatientNode {
  64. 	public Patient data;
  65. 	public PatientNode next;
  66.  
  67. 	public PatientNode(Patient data, PatientNode next) {
  68. 		this.data = data;
  69. 		this.next = next;
  70. 	}
  71. }
  72.  
  73. class Patient{
  74. 	private String name;
  75. 	private int severity;
  76. 	private int arrival;
  77.  
  78. 	public Patient(String name, int arrival, int severity){
  79. 		this.name = name;
  80. 		this.severity = severity;
  81. 		this.arrival = arrival;
  82. 	}
  83.  
  84. 	public int getSeverity() {
  85. 		return severity;
  86. 	}
  87.  
  88. 	public int getArrival() {
  89. 		return arrival;
  90. 	}
  91.  
  92. 	@Override
  93. 	public String toString(){
  94. 		return "Patient " + this.name + " arrived at " + this.arrival + " with severity " + this.severity;
  95. 	}
  96. }
  97.  
  98. /* Name of the class has to be "Main" only if the class is public. */
  99. class Ideone
  100. {
  101. 	public static void main (String[] args) throws java.lang.Exception
  102. 	{
  103. 		caseOne();
  104. 		System.out.println();
  105. 		caseTwo();
  106. 		System.out.println();
  107. 		caseThree();
  108. 		System.out.println();
  109. 	}
  110.  
  111. 	private static void caseOne(){
  112. 		LinkedPatients hospi = new LinkedPatients();
  113. 		hospi.add("Ihor", 1);
  114. 		hospi.add("Casper", 3);
  115. 		hospi.add("Clayton", 2);
  116. 		hospi.add("Zelma", 1);
  117. 		printHospi(hospi);
  118. 	}
  119.  
  120. 	private static void caseTwo(){
  121. 		LinkedPatients hospi = new LinkedPatients();
  122. 		hospi.add("Zelma", 1);
  123. 		hospi.add("Clayton", 2);
  124. 		hospi.add("Casper", 3);
  125. 		hospi.add("Ihor", 1);
  126. 		hospi.add("Edwina", 3);
  127. 		printHospi(hospi);
  128. 	}
  129.  
  130. 	private static void caseThree(){
  131. 		LinkedPatients hospi = new LinkedPatients();
  132. 		hospi.add("Zelma", 1);
  133. 		hospi.add("Clayton", 2);
  134. 		hospi.add("Ihor", 1);
  135. 		hospi.add("Edwina", 3);
  136. 		printHospi(hospi);
  137. 	}
  138.  
  139. 	public static void printHospi(LinkedPatients hospi){
  140. 		System.out.println("Size = " + hospi.getSize());
  141. 		System.out.println("LastArrival = " + hospi.getLastArrival());
  142. 		PatientNode current = hospi.getHead();
  143. 		while(current != null){
  144. 			System.out.println(current.data);
  145. 			current = current.next;
  146. 		}
  147. 	}
  148. }
Success #stdin #stdout 0.09s 320576KB
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stdout
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Size = 4
LastArrival = 4
Patient Casper arrived at 2 with severity 3
Patient Clayton arrived at 3 with severity 2
Patient Ihor arrived at 1 with severity 1
Patient Zelma arrived at 4 with severity 1

Size = 5
LastArrival = 5
Patient Casper arrived at 3 with severity 3
Patient Edwina arrived at 5 with severity 3
Patient Clayton arrived at 2 with severity 2
Patient Zelma arrived at 1 with severity 1
Patient Ihor arrived at 4 with severity 1

Size = 4
LastArrival = 4
Patient Edwina arrived at 4 with severity 3
Patient Clayton arrived at 2 with severity 2
Patient Zelma arrived at 1 with severity 1
Patient Ihor arrived at 3 with severity 1
https://ideone.com/inC5sQ
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
secret

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