Remove Linked List Elements(删除链表中的节点)
题目:链接
/**
* 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)
{
if(head == nullptr)
return head;
ListNode * newnode = new ListNode(0);
newnode->next = head;
ListNode *pre = newnode;
while(pre->next)
{
if(pre->next->val == val)
pre->next = pre->next->next;
else
pre = pre->next;
}
return newnode->next;
}
};