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Remove Duplicates from Sorted List
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.
1 /** 2 * Definition for singly-linked list. 3 * struct ListNode { 4 * int val; 5 * ListNode *next; 6 * ListNode(int x) : val(x), next(NULL) {} 7 * }; 8 */ 9 class Solution {10 public:11 ListNode *deleteDuplicates(ListNode *head) {12 13 ListNode *p = head;14 while(p != NULL && p->next != NULL)15 {16 if(p->val == p->next->val)17 {18 ListNode *del = p->next;19 p->next = p->next->next;20 delete del;21 }22 else23 p = p->next;24 }25 26 return head;27 }28 };
Remove Duplicates from Sorted List
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