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题目：
Remove all elements from a linked list of integers that have value val.
Example
Given: 1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6, val = 6
Return: 1 --> 2 --> 3 --> 4 --> 5
思路：设置前置指针，并随之移动。
代码：
public class Solution { public ListNode removeElements(ListNode head, int val) { ListNode req = new ListNode(0); req.next = head; ListNode pre = req; while(head != null){ if(head.val == val){ pre.next = head.next; }else pre = pre.next; head = head.next; } return req.next; } }
[LeetCode-JAVA] Remove Linked List Elements
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原文地址：http://www.cnblogs.com/TinyBobo/p/4543536.html
