https://oj.leetcode.com/problems/remove-duplicates-from-sorted-list/
http://blog.csdn.net/linhuanmars/article/details/24354291
/**
* Definition for singly-linked list.
* public class ListNode {
* int val;
* ListNode next;
* ListNode(int x) {
* val = x;
* next = null;
* }
* }
*/
public class Solution {
public ListNode deleteDuplicates(ListNode head) {
ListNode pre = null;
ListNode node = head;
while (node != null)
{
if (pre == null)
{
pre = node;
node = node.next;
}
else if (pre.val == node.val)
{
// Delete node
pre.next = node.next;
node.next = null;
node = pre.next;
}
else
{
pre = node;
node = node.next;
}
}
return head;
}
}[LeetCode]83 Remove Duplicates from Sorted List
原文：http://7371901.blog.51cto.com/7361901/1599019