建立两个带头结点的有序单链表La、Lb（单调递增，结点的值域为整型数据），利用La、Lb的结点空间，将La和Lb合并成一个按元素值递增的有序单链表Lc。

-Establish two lead the node orderly single-strand table La, Lb (monotonic increasing, node domain for integer data), using the La, Lb node of space, will be merged into one La and Lb by increasing the orderly single-strand elements value table Lc.