首页 > 代码库 > Leetcode: Remove Duplicates from Sorted List II
Leetcode: Remove Duplicates from Sorted List II
Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list.
For example,
Given 1->2->3->3->4->4->5
, return 1->2->5
.
Given 1->1->1->2->3
, return 2->3
.
分析:要充分利用sorted的性质,如果是sorted的那么重复的元素是连接在一起的,实现细节要注意删除node和未删除node指针向后移动的不同。
class Solution {public: ListNode *deleteDuplicates(ListNode *head) { if(head == NULL || head->next == NULL) return head; int dup = INT_MAX; ListNode *dummy = new ListNode(-1); dummy->next = head; for(ListNode *prev = dummy, *p = head; p; p = prev->next){ if(p->val == dup){ prev->next = p->next; }else if(p->next && p->val == p->next->val){ dup = p->val; prev->next = p->next; }else prev = p; } return dummy->next; }};
Leetcode: Remove Duplicates from Sorted List II
声明:以上内容来自用户投稿及互联网公开渠道收集整理发布,本网站不拥有所有权,未作人工编辑处理,也不承担相关法律责任,若内容有误或涉及侵权可进行投诉: 投诉/举报 工作人员会在5个工作日内联系你,一经查实,本站将立刻删除涉嫌侵权内容。