public void Add( int value)
{
if (head == null)
{
head = new Node(value, null, null);
}
else
{
Node headtemp = head;
while (true)
{
if (headtemp.value <= value)
{
headtemp = headtemp.right;
}
else
if (headtemp.value > value)
headtemp = headtemp.left;
if (headtemp == null)
{
headtemp = new Node(value, null, null);
break;
}
}
}
}