
Desicription
输入一个复杂链表(每个节点中有节点值,以及两个指针,一个指向下一个节点,另一个特殊指针指向任意一个节点),返回结果为复制后复杂链表的head。(注意,输出结果中请不要返回参数中的节点引用,否则判题程序会直接返回空)
Solution
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class { public: RandomListNode* Clone(RandomListNode* pHead) { if(pHead == nullptr) { return nullptr; } for(RandomListNode* now = pHead; now != nullptr; now = now->next) { auto newNode = new RandomListNode(now->label); newNode->next = now->random; now->random = newNode; } for(RandomListNode* now = pHead; now != nullptr; now = now->next) { auto newNode = now->random; newNode->random = newNode->next != nullptr ? newNode->next->random : nullptr; } auto newHead = pHead->random; for(RandomListNode* now = pHead; now != nullptr; now = now->next) { auto newNode = now->random; now->random = newNode->next; newNode->next = now->next != nullptr ? now->next->random : nullptr; } return newHead; } };
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