public Spot get(Spot x)
{
Spot tmp = first;
while (tmp != null)
{
if (tmp.Equals(x))
{
if (tmp.previous != null)
{
tmp.previous.next = tmp.next;
}
else
{
first = tmp.next;
}
if (tmp.next != null)
{
tmp.next.previous = tmp.previous;
}
else
{
last = tmp.previous;
}
length--;
return(tmp);
}
tmp = tmp.next;
}
return(null);
}
public Boolean contains(Spot x)
{
Spot tmp = first;
while (tmp != null)
{
if (tmp.Equals(x))
{
return(true);
}
tmp = tmp.next;
}
return(false);
}