public bool Remove(string data)
{
SimpleElement current = head;
SimpleElement previous = null;
while (current != null)
{
if (current.Data.Equals(data))
{
if (previous != null)
{
previous.Next = current.Next;
if (current.Next == null)
{
tail = previous;
}
}
else
{
head = head.Next;
if (head == null)
{
tail = null;
}
}
count--;
return(true);
}
previous = current;
current = current.Next;
}
return(false);
}
public override string ToString()
{
string str = "";
SimpleElement current = this.head;
while (current != null)
{
str += current.Data;
current = current.Next;
}
return(str);
}
public void AppendFirst(string data)
{
SimpleElement node = new SimpleElement(data);
node.Next = head;
head = node;
if (count == 0)
{
tail = head;
}
count++;
}
public int Contains(string data)
{
SimpleElement current = head;
while (current != null)
{
if (current.Data.Equals(data))
{
return(current.Key);
}
current = current.Next;
}
return(0);
}
public void Add(string data)
{
SimpleElement node = new SimpleElement(data);
if (head == null)
{
head = node;
}
else
{
tail.Next = node;
}
tail = node;
count++;
}
public void Clear()
{
head = null;
tail = null;
count = 0;
}