题目: A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null. Return a deep copy of the list. 解题思路: 拷贝链表时,新节点的random指针不太好设置,因为是随机的,所以如果采用常规方法,必须每设置一个新节点的random指针时,必须到两链表中进行查找.…