AcWing 29. 删除链表中重复的节点
原题链接
中等
作者:
隐灵
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2024-01-22 17:00:33
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所有人可见
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阅读 38
/**
* Definition for singly-linked list.
* struct ListNode {
* int val;
* ListNode *next;
* ListNode(int x) : val(x), next(NULL) {}
* };
*/
class Solution {
public:
ListNode* deleteDuplication(ListNode* head) {
auto dummy = new ListNode(-1);
dummy->next = head;
auto p = dummy;
while(p->next)
{
auto q = p->next;
while(q->next && p->next->val == q->next->val) q = q->next; //过滤掉相同项
if(p->next == q) p = q; //没有相同项,p跳到下一个
else p->next = q->next; //有相同项,p指向q的下一个
}
return dummy->next;
}
};