有两个按元素依次递增次序排列的线性表，编写算法将这两个单链表归并为一个按递减次序排列的单链表，并要求利用原来两个单链表的节点存放归并后的单链表-There are two elements in order according to ascending order of the linear form, the preparation method the two merged into a single list in descending order by the single list,