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83. 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
.
递归搞一下,链表这种东西使用递归会很方便
/** * 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) { //ListNode * p = head; if (head == NULL) return NULL; head->next = deleteDuplicates(head->next); if(head->next != NULL && head->val == head->next->val) head = head->next; return head; }};
83. Remove Duplicates from Sorted List
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