链表实现，按照大小输出，删除素数，删除3的倍数，添加7的倍数，对链表进行扩展，奇数：1，偶数：2.-Linked implementation, in accordance with the size of the output delete the prime number, to delete the multiple of 3, adding a multiple of 7, and the extension of the list, and odd: 1, even: 2.