已知带头结点的动态单链表L中的结点是按整数值递增排序的，试写一算法将值为x的结点插入到表L中，使L仍然有序。-Known to take the lead in the dynamics of a single node in the node list L is based on integer values ​ ​ in ascending order, the algorithm will try to write a value of x nodes into lis