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SingleLinkedList3.java
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SingleLinkedList3.java
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public class SingleLinkedList3 {
private static Node head;
public SingleLinkedList3()
{
head = null;
}
public void addToEnd(Object dataToAdd)
{
Node newNode = new Node(dataToAdd);
if(head == null)
{
head = newNode;
}
else
{
Node temp = head;
while(temp.getLink() != null)
{
temp = temp.getLink();
}
temp.setLink(newNode);
}
}
public String display()
{
String output = "";
Node temp = head;
while(temp != null)
{
output += temp.getData() + " ";
temp = temp.getLink();
}
return output;
}
public void remove(Object dataToRemove)
{
if(head == null)
{
System.err.println("The Linked List is empty");
}
else
{
while((int)head.getData() == (int)dataToRemove)
{
head = head.getLink();
}
Node temp = head;
Node prev = null;
while(temp != null)
{
if((int)temp.getData() == (int) dataToRemove)
{
prev.setLink(temp.getLink());
temp = temp.getLink();
}
else
{
prev = temp;
temp = temp.getLink();
}
}
}
}
public int size()
{
if(head == null)
{
System.err.println("The Linked List is empty");
return 0;
}
else
{
int counter = 0;
Node temp = head;
while(temp != null)
{
counter++;
temp = temp.getLink();
}
return counter;
}
}
public boolean search(Object dataToSearch)
{
if(head == null)
{
return false;
}
else
{
Node temp = head;
boolean retVal = false;
while(temp != null)
{
if((int)temp.getData() == (int) dataToSearch)
{
retVal = true;
break;
}
temp = temp.getLink();
}
return retVal;
}
}
public int getFirst() {
int first = 0;
if(head == null)
{
System.err.println("The Linked List is empty");
}
else {
Node temp = head;
first = (int) temp.getData();
temp = temp.getLink();
}
return first;
}
}