remove-duplicates-from-sorted-list

gistfile1.txt

https://oj.leetcode.com/problems/remove-duplicates-from-sorted-list/

/*
반드시 인접해있는 두 노드만 duplicated 되어있는지? -> YES
O(n) solution : 순회하면서 duplicated 노드 만나면 삭제(건너뛰고)연결
*/

/**
 * 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 * cur = head;
        
        while(cur) {
            ListNode* next = cur->next;
            while(next && cur->val == next->val) {
                delete next;
                next = next->next;
            }
            
            cur->next = next;
            cur = next;            
        }
        
        return head;
        
    }
};