83.Remove Duplicates from Sorted List
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题目:
Given a sorted linked list, delete all duplicates such that each element appear only once.
For example,
Given 1->1->2
, return 1->2
.
Given 1->1->2->3->3
, return 1->2->3
.
public:
ListNode *deleteDuplicates(ListNode *head) {
if(head==NULL||head->next==NULL) return head;
ListNode *p=head;
while(p!=NULL){
while(p->next&&p->val==p->next->val)
p->next=p->next->next;
p=p->next;
}
return head;
}
};
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