Description
Remove all elements from a linked list of integers that have value val.
Example:
Input: 1->2->6->3->4->5->6, val = 6
Output: 1->2->3->4->5
描述
删除链表中等于给定值 val 的所有节点。
示例:
输入: 1->2->6->3->4->5->6, val = 6
输出: 1->2->3->4->5
实现
- 本题目考察基本的链表操作.
# -*- coding: utf-8 -*- # @Author: 何睿 # @Create Date: 2019-01-20 21:12:46 # @Last Modified by: 何睿 # @Last Modified time: 2019-01-20 21:23:10 # Definition for singly-linked list. class ListNode: def __init__(self, x): self.val = x self.next = None class Solution: def removeElements(self, head, val): """ :type head: ListNode :type val: int :rtype: ListNode """ # 添加一个辅助节点 node = ListNode(0) node.next = head res = node while node and node.next: if node.next.val == val: temp = node.next node.next = temp.next del temp else: node = node.next return res.next
源代码文件在这里.
