public void InsertInEmptyList(int data)
{
Node temp = new Node(data);
last = temp;
last.link = last;
}
public void Concatenate(CircularLinkedList list)
{
if (last == null)
{
last = list.last;
return;
}
if (list.last == null)
{
return;
}
Node p = last.link;
last.link = list.last.link;
list.last.link = p;
last = list.last;
}
public void InsertInBeginning(int data)
{
Node temp = new Node(data);
temp.link = last.link;
last.link = temp;
}
internal void DeleteLastNode()
{
// List is empty
if (last == null)
{
return;
}
// The List has only one Node
if (last.link == last)
{
last = null;
return;
}
Node p = last.link;
while (p.link != last)
{
p = p.link;
}
p.link = last.link;
last =p;
}
internal void DeleteNode(int x)
{
// List is empty
if (last == null)
{
return;
}
//Deletion of only one Note
if (last.link == last && last.info == x)
{
last = null;
return;
}
//Deletion of the first node.
if (last.link.info == x)
{
last.link = last.link.link;
return;
}
Node p = last.link;
while (p.link != last.link)
{
if (p.link.info == x)
{
break;
}
p = p.link;
}
if (p.link == last.link)
{
Console.WriteLine(x + "not found in the list.");
}
else
{
p.link = p.link.link;
if (last.info == x)
{
last = p;
}
}
}
internal void DeleteFirstNode()
{
// the list is empty
if (last == null)
{
return;
}
// the list has only one Node.
if (last.link == last)
{
last = null;
return;
}
last.link = last.link.link;
}
public CircularLinkedList()
{
last = null;
}
public void InsertAfter(int data,int x)
{
Node p = last.link;
do
{
if (p.info == x)
{
break;
}
p = p.link;
} while (p != last.link);
if (p == last.link && p.info != x)
{
Console.WriteLine(x + " not present in the list<> ");
}
else
{
Node temp = new Node(data);
temp.link = p.link;
p.link = temp;
if (p == last)
{
last = temp;
}
}
}
public void InsertAtEnd(int data)
{
Node temp = new Node(data);
temp.link = last.link;
last.link = temp;
last = temp;
}
public Node(int i)
{
info = i;
link = null;
}
