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.
结题报告:
水题。。。
/** * Definition for singly-linked list. * struct ListNode { * int val; * ListNode *next; * ListNode(int x) : val(x), next(NULL) {} * }; */ class Solution { public: ListNode* deleteDuplicates(ListNode* head) { if(head==NULL)return head; ListNode*p=head; ListNode*q=head->next; while(q!=NULL){ if(q->val!=p->val){ p->next=q; p=p->next; } q=q->next; } p->next=NULL; return head; } }; |
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