算法描述：
Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list.
Example 1:
Input: 1->2->3->3->4->4->5 Output: 1->2->5
Example 2:
Input: 1->1->1->2->3 Output: 2->3
解题思路：列表题，画出图基本上就能解出来。
ListNode* deleteDuplicates(ListNode* head) { ListNode* dummy = new ListNode(-1); dummy->next =head; ListNode* cur = dummy; while(cur->next!=nullptr && cur->next->next!=nullptr){ if(cur->next->val == cur->next->next->val){ int data = cur->next->val; while(cur->next!=nullptr && cur->next->val == data){ cur->next = cur->next->next; } }else{ cur = cur->next; } } return dummy->next; }
LeetCode-5-Longest Palindromic Characters
原文：https://www.cnblogs.com/nobodywang/p/10345460.html