public T RemoveLast()
{
IteaLinkedListElement <T> last = GetLast();
Count--;
if (last != Head)
{
last.Previous.Next = null;
}
return(last.Content);
}
private IteaLinkedListElement <T> IteaGoogle(int index)
{
int i = 0;
IteaLinkedListElement <T> current = Head;
while (i < index && current.Next != null)
{
i++;
current = current.Next;
}
return(current);
}
public override string ToString()
{
string str = $"{Head.Content}; ";
IteaLinkedListElement <T> current = Head;
while (current?.Next != null)
{
str += $"{current.Next.Content}; ";
current = current.Next;
}
return(str);
}
public T this[int index]
{
get
{
int i = 0;
IteaLinkedListElement <T> current = Head;
while (i < index && current.Next != null)
{
i++;
current = current.Next;
}
return(current.Content);
}
}
private IteaLinkedListElement <T> GetLast()
{
if (Head == null)
{
throw new Exception("Head is null");
}
else
{
IteaLinkedListElement <T> last = Head;
while (last.Next != null)
{
last = last.Next;
}
return(last);
}
}
public void InsertByIndex(int index, T element)
{
if (index < 1 && index > Count)
{
throw new IndexOutOfRangeException();
}
Count++;
IteaLinkedListElement <T> itemToReplace = IteaGoogle(index);
IteaLinkedListElement <T> newItem = new IteaLinkedListElement <T>(element);
IteaLinkedListElement <T> previousItem = itemToReplace.Previous;
previousItem.Next = newItem;
newItem.Previous = previousItem;
newItem.Next = itemToReplace;
itemToReplace.Previous = newItem;
}
public void Add(T el)
{
IteaLinkedListElement <T> newElement = new IteaLinkedListElement <T>(el);
Count++;
if (Head == null)
{
Head = newElement;
}
else
{
IteaLinkedListElement <T> last = Head;
while (last.Next != null)
{
last = last.Next;
}
last.Next = newElement;
newElement.Previous = last;
}
}
public IteaGenericLinkedList(T element)
{
Count = 1;
Head = new IteaLinkedListElement <T>(element);
}
