Java ~ operating system experiment simulates the elevator scheduling algorithm to achieve the disk scheduling.

Article catalog Experiment content Purpose of the experiment Experimental principle Complete code + test Experiment content Simulation of elevator scheduling algorithm to achieve disk scheduling. Purpose of the experiment Disk is a kind of high-speed, large number of rotating, direct access ...

Posted on Tue, 16 Jun 2020 04:39:09 -0400 by Mr Chris

matplotlib, a common module of python

See video: Python Tutorial 4 days to start Python data mining quickly 1 Introduction to Matplotlib 1.1 what is Matplotlib Dedicated to developing 2D charts (including 3D charts) Very simple to use Data visualization in a gradual and interactive way The name of matplotlib comes from: Matrix mat ...

Posted on Tue, 16 Jun 2020 04:00:58 -0400 by PhilipXVIII18

What is data definition language (DDL) in MySQL series?

If you are just learning about MySQL, please read the following articles before you read this article. Some knowledge may be a little difficult for you to master, but please believe me, according to the learning process I provide, you can read it again and again, so that you won't know where to start wh ...

Posted on Tue, 16 Jun 2020 02:03:50 -0400 by rmelino

python builds ARIMA model for time series analysis (paper)

#How to start a paper on data processing from scratch I really don't know how to do it. It's pure entry-level. Just draw a picture and hand in a paper. Here's how I do it (for reference only) ##CSV data Pay attention to the date format. When you open it in excel, it will become the default date format. ...

Posted on Tue, 16 Jun 2020 01:16:46 -0400 by seran128

Java implementation of simple one-way linked list [inner class]

Article catalog Source code implementation Operation results Source code analysis Source code implementation package cn.Link; interface ILink<E> { public void add(E e);//Linked list data increase public int count();//Get the number of linked list elements public boolean isEmpty ...

Posted on Mon, 15 Jun 2020 23:19:09 -0400 by valoukh

Difference between Mutex and RWMutex

Mutex lock and read-write lock Here's a quote Performance analysis of golang mutual exclusion lock and read-write lock The definitions of mutex lock and read-write lock in are clear mutex 1. There are two operations for mutex: acquire lock and release lock 2. When a goroutine acquires the mutex, no ...

Posted on Mon, 15 Jun 2020 23:14:29 -0400 by doofystyle

Python Version Commodity Futures Multivariate Average Line Strategy

Complete transplantation from "Multi-variety average strategy for CTP commodity futures" Since the Python version of the commodity futures strategy does not yet have a multi-variety strategy, the JavaScript version of the "CTP commodity futures multi-variety average strategy" has been transplanted.Provides some design ideas ...

Posted on Mon, 15 Jun 2020 22:13:13 -0400 by eldee

Deep learning: starting from the deeper network

This paper is part of the reading notes of "getting started with deep learning based on Python theory and implementation" Code and picture refer to this book catalog Add deep motivation Reduce the number of network parameters Make learning more efficient High speed of deep learning High s ...

Posted on Mon, 15 Jun 2020 03:28:05 -0400 by Brandito520

Android Q graphics system uses pure native API to draw a window

This article draws a window according to the previous analysis and implements it with the pure native API. The native API here is not ndk, but a native layer function, which needs to be implemented in the AOSP compilation environment. First, create the drawWindowTest test directory in the / frameworks/n ...

Posted on Mon, 15 Jun 2020 01:58:37 -0400 by akumakeenta

Sword finger off

1, Linked list2, Queues3, Stack 1, Linked list JZ3 printing chain list from end to end The k last node in JZ14 list JZ15 reverse list JZ16 merges two sorted linked lists Copy of JZ25 complex linked list JZ26 binary search tree and double linked list The first common node of two linked lists of JZ ...

Posted on Mon, 15 Jun 2020 01:43:43 -0400 by Dave Liebman