public void AddLast(int number)
{
DoubleElement elem = new DoubleElement(number);
if (head == null)
{
head = elem;
}
else
{
tail.Next = elem;
elem.Previous = tail;
}
tail = elem;
count++;
}
public MyList AbonentToList()
{
DoubleElement current = this.tail;
MyList ListOfAbonents = new MyList();
while (current != null)
{
int digitCount = (int)Math.Log10(current.Number) + 1;
if (digitCount == 7)
{
ListOfAbonents.Add(current.Number);
MyList.Sort(ListOfAbonents);
}
current = current.Previous;
}
return(ListOfAbonents);
}
public void AddFirst(int number)
{
DoubleElement elem = new DoubleElement(number);
DoubleElement temp = head;
elem.Next = temp;
head = elem;
if (count == 0)
{
tail = head;
}
else
{
temp.Previous = elem;
}
count++;
}
public override string ToString()
{
DoubleElement elem = this.head;
string str = "";
while (elem != null)
{
str += elem.Number.ToString() + "\n";
elem = elem.Next;
}
if (str.Length == 0)
{
return("Список пуст!");
}
else
{
return("\nСписок всех номеро:\n" + str);
}
}
public string ReverseString()
{
DoubleElement elem = this.tail;
string str = "";
while (elem != null)
{
str += elem.Number.ToString() + "\n";
elem = elem.Previous;
}
if (str.Length == 0)
{
return("Список пуст!");
}
else
{
return("\nСписок всех номеро:\n" + str);
}
}
public bool Remove(int number)
{
DoubleElement current = head;
while (current != null)
{
if (current.Number.Equals(number))
{
break;
}
current = current.Next;
}
if (current != null)
{
if (current.Next != null)
{
current.Next.Previous = current.Previous;
}
else
{
tail = current.Previous;
}
if (current.Previous != null)
{
current.Previous.Next = current.Next;
}
else
{
head = current.Next;
}
count--;
return(true);
}
return(false);
}
public void Clear()
{
head = null;
tail = null;
count = 0;
}
