Implement a simple stock price display systemwhich will show High, Low and Last price for a given stock throughout one day.The data comes from a real-time feed and have the following messages: PriceUpdate(t, P) -> Price of Stock A at timet is P. Corr…

VM-FT 论文总结 说明:本文为论文 <The Design of a Practical System for Fault-Tolerant Virtual Machines> 的个人总结,难免有理解不到位之处,欢迎交流与指正 . 论文地址:VM-FT 论文 本文的总结包括论文内容以及 MIT6.824 Lec4 中的授课内容,其中包含了论文中没有提及的一些细节 . 1. 前言 本论文主要介绍了一个用于提供 容错虚拟机 (fault-tolerant virtual machine) 的企…

VM-FT 论文研读 说明:本文为论文 <The Design of a Practical System for Fault-Tolerant Virtual Machines> 的个人理解,难免有理解不到位之处,欢迎交流与指正 . 论文地址:VM-FT 论文 本文的总结包括论文内容以及 MIT6.824 Lec4 中的授课内容,其中包含了论文中没有提及的一些细节 . 1. 前言 本论文主要介绍了一个用于提供 容错虚拟机 (fault-tolerant virtual machine) 的企…

using System; using System.Collections.Generic; namespace ConsoleApplication10 { /// <summary> /// 在软件构建过程中,我们需要为某些对象建立一种“通知依赖关系” /// ——一个对象(目标对象)的状态发生改变,所有的依赖对象(观察者对象)都将得到通知. /// 如果这样的依赖关系过于紧密,将使软件不能很好地抵御变化.使用面向对象技术,可以将这种依赖关系弱化, /// 并形成一种稳定的依赖关系.从而…

Design a search autocomplete system for a search engine. Users may input a sentence (at least one word and end with a special character '#'). For each character they type except '#', you need to return the top 3historical hot sentences that have pref…

You are given several logs that each log contains a unique id and timestamp. Timestamp is a string that has the following format: Year:Month:Day:Hour:Minute:Second, for example, 2017:01:01:23:59:59. All domains are zero-padded decimal numbers. Design…

Design an in-memory file system to simulate the following functions: ls: Given a path in string format. If it is a file path, return a list that only contains this file's name. If it is a directory path, return the list of file and directory names in…

原题链接在这里:https://leetcode.com/problems/design-log-storage-system/description/ 题目: You are given several logs that each log contains a unique id and timestamp. Timestamp is a string that has the following format: Year:Month:Day:Hour:Minute:Second, for…

Design a search autocomplete system for a search engine. Users may input a sentence (at least one word and end with a special character '#'). For each character they type except '#', you need to return the top 3historical hot sentences that have pref…

Design an in-memory file system to simulate the following functions: ls: Given a path in string format. If it is a file path, return a list that only contains this file's name. If it is a directory path, return the list of file and directory names in…