83. 删除排序链表中的重复元素
class Solution {
public:
ListNode* deleteDuplicates(ListNode* head) {
if(!head||!head->next) return head;
ListNode*cur=head;
while(cur->next)
{
if(cur->val==cur->next->val)
{
cur->next=cur->next->next;
}
else
{
cur=cur->next;
}
}
return head;
}
};