题目描述:
A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null.
Return a deep copy of the list.
题目大意:
给定一个链表,其中的节点包含一个额外的随机指针,可能指向链表中的任意一个节点或者为空。
返回链表的深拷贝。
解题思路:
解法I ...
最后更新于 .
A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null.
Return a deep copy of the list.
给定一个链表,其中的节点包含一个额外的随机指针,可能指向链表中的任意一个节点或者为空。
返回链表的深拷贝。
解法I ...
最后更新于 .
Given a string of numbers and operators, return all possible results from computing all the different possible ways to group numbers and operators. The valid operators are +, - and *.
Example 1
Input: "2-1-1".
((2-1)-1) = 0 (2-(1-1 ...
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Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties:
Integers in each row are sorted in ascending from left to right.
Integers in each column are sorted ...
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SAE新近开放的实时日志API允许开发者通过HTTP GET方式从SAE服务器获取应用日志,从而实现在线的应用调试与分析。
SAE日志API的URL请求格式为:GET /log/(string: service)/(string: date)/(string: ident).log?(string: fop)
参数列表中:
date表示日志的日期,格式为yyyy-MM-dd
service为SAE提供的各项服务,包括http,taskqueue(任务队列),cron(定时任务),mail(邮件),rdc(关系型数据库集群),storage(存储),push(推送)以及fetchurl(URL抓取),相信熟悉SAE的开发者不会对此感到陌生。
ident表示相应服务下的日志类型 ...
最后更新于 .
Given a string s and a dictionary of words dict, add spaces in s to construct a sentence where each word is a valid dictionary word.
Return all such possible sentences.
For example, given
s = "catsanddog",
dict = ["cat", "cats" ...