Leetcode 83 Remove Duplicates from Sorted List 链表

就是将链表中的重复元素去除

我的方法很简单就是如果链表的前后元素相同的话，将后一个元素删除

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