有两个按元素值递增次序排列的线性表，均以单链表形式存储。请编写算法将这两个单链表归并为一个按元素值递减次序排列的单链表，并要求利用原来两个单链表的结点存放归并后的单链表-There are two elements of value according to the ascending order of the linear form, are stored as single linked list. Please write algorithms merge the two into a single list in descending order by element value of a single list, and requested use of the original two single linked list of nodes storing a single list after merging