LeetCode：203. 移除链表元素

1、题目描述

删除链表中等于给定值 val 的所有节点。

示例:

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1 2	输入: 1->2->6->3->4->5->6, val = 6 输出: 1->2->3->4->5

2、题解

2.1、解法一

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# Definition for singly-linked list. # class ListNode(object): #     def __init__(self, x): #         self.val = x #         self.next = None   class Solution(object):     def removeElements(self, head, val):         """         :type head: ListNode         :type val: int         :rtype: ListNode         """         node = head         prev = head         while node:             if node.val == val:                 if node == head:                     head = node.next                 else:                     prev.next = node.next             else:                 prev = node             node = node.next           return head