假设有两个按元素值递增次序排列的线性表A和B，均以单链表形式存储，里面的大部分元素对应相等，请删除一些元素（A中有而B中没有，或B中有而A中没有），使得两个有序表中保留下来的元素对应相等。比如，A中元素为（1,3,5,7,8,10,13,18），B中元素为（1,3,6,8,9,10,13,15），则删除元素后A、B里的元素为（1,3,8,10,13）。-Suppose there are two elements of value by increasing order of linear tables A and B, are stored in the form of a single list, which corresponds to most of the elements are equal, delete some elements (A and B, there is no, or B in which a no), so that the retained element is equal to the corresponding two ordered tables. After such, A middle element (1,3,5,7,8,10,13,18), B the elements (1,3,6,8,9,10,13,15), then remove elements a, B, the elements of (1,3,8,10,13).