/**
* Definition for singly-linked list.
* struct ListNode {
* int val;
* ListNode *next;
* ListNode(int x) : val(x), next(NULL) {}
* };
*/
class Solution {
public:
ListNode* removeElements(ListNode* head, int val) {
ListNode* dummyHead=new ListNode(0);
dummyHead->next=head;
ListNode *cur=dummyHead;
while(cur->next!=NULL)
{
if(cur->next->val==val)
{
//删除cur->next
ListNode* delNode=cur->next;
cur->next=delNode->next;
delete delNode;
}
else
{
cur=cur->next;
}
}
ListNode* retNode=dummyHead->next;
delete dummyHead;
return retNode;
}
};
005.使用虚拟头节点解决链表问题:LeetCode 203. 移除链表元素
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