private void CopyNodes(ComplexListNode node)
{
var head = node;
while (node != null)
{
var cpNode = new ComplexListNode(node.val);
cpNode.next = node.next;
node.next = cpNode;
node = cpNode.next;
}
}
private ComplexListNode CloneNodes(ComplexListNode node)
{
CopyNodes(node);
ConnectSibilingNodes(node);
return(SliceNodes(node));
}