public void RemoveLast()
{
if (Count != 0)
{
if (Count == 1)
{
Head = null;
Tail = null;
}
else
{
ListNode currrent = Head;
while (currrent.next != Tail)
{
currrent.next = null;
Tail = currrent;
}
}
Count--;
}
}
private ListNode getMiddle(ListNode head)
{
// Base case
if (head == null)
{
return(head);
}
ListNode fastptr = Head.next;
ListNode slowptr = head;
// Move fastptr by two and slow ptr by one
// Finally slowptr will point to middle node
while (fastptr != null)
{
fastptr = fastptr.next;
if (fastptr != null)
{
slowptr = slowptr.next;
fastptr = fastptr.next;
}
}
return(slowptr);
}
