2024每日刷题(129)
Leetcode—138. 随机链表的复制
实现代码
/*
// Definition for a Node.
class Node {
public:int val;Node* next;Node* random;Node(int _val) {val = _val;next = NULL;random = NULL;}
};
*/class Solution {
public:Node* copyRandomList(Node* head) {if(head == nullptr) {return nullptr;}unordered_map<Node*, Node*> map;Node* cur = head;while(cur != nullptr) {Node* s = new Node(cur->val);map[cur] = s;cur = cur->next;}cur = head;while(cur != nullptr) {map[cur]->next = map[cur->next];map[cur]->random = map[cur->random];cur = cur->next;}return map[head];}
};
运行结果
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