The following 10 awesome modules of Python are recommended. For example, the numpy and pandas packages are used for data cleaning. The matplotlib library is used for data visualization. The matplotlib library is easy to get started. For more advanced learning, the seaborn library is an improved chart drawing of the matplotlib library. Method, if […]
Tag: thin
LC-1334. The city with the fewest neighbors within the threshold distance (Floyd algorithm, memorized search ==> dynamic programming (0x3f))
1334. The city with the fewest neighbors within the threshold distance medium There are n cities, numbered from 0 to n-1. Give you an edge array edges, where edges[i] = [fromi, toi, weighti] represents fromi and toi code> A bidirectional weighted edge between two cities, the distance threshold is an integer distanceThreshold. Returns the city […]
AcWing 129th Weekly Competition – 5289. Cow Problems – Thinking/Greedy
You can think of the data as a matrix with n rows and k columns. The values in each column of this matrix are equal. Each time you complete a test paper on the matrix, it will take a[i] time and you will get a score + 1. Completing an entire row of papers will […]
About how to replace pictures in 21 Internet of Things Linux “gec6818” (with resources)
1. Basics How to replace pictures 1. Find a picture, any format will do (I will give an example here: key.png) 2. Open this picture with Paint: 3. In Paint >> click “Resize” >> switch to pixel units, unlock the aspect ratio, and then enter the size >> The specific size is determined according to […]
A turntable (music disk) made by Vue that rotates at a click. When you click to stop, it will slowly stop within a few seconds. Click the button again to rotate again.
Look at the effect first: Code: I will draw the main parts with red lines css:section: Source code: vue part: <template> <div class=”song-lyric”> <div> <div class=”type”> <div class=”right”> <div class=”right-center” :class=”{ ‘rotates’: isplay }”> <div> <img src=”//i2.wp.com/imagesone.oss-cn-beijing.aliyuncs.com/imagebishe/player_bar.png” class=”right-top” :class=”{rotated: isplay}”> </div> <div> <img src=”//i2.wp.com/imagesone.oss-cn-beijing.aliyuncs.com/imagebishe/disc.png” class=”tight-bottm” :style=”{ transform: ‘rotate(‘ + rotationAngle + ‘deg)’ }”> </div> </div> […]
Problems encountered when maintaining domain name cache within the application
In a recent project I participated in, I encountered a series of problems that relied on DNS servers to resolve external business clusters. The remote business cluster provides business services based on the HTTP/HTTPS protocol. The cluster contains multiple business nodes. In the current solution, domain names are configured on the DNS server to point […]
lang-segment-anything local deployment
1. Introduction Code address: https://github.com/luca-medeiros/lang-segment-anything https://github.com/IDEA-Research/GroundingDINO lang-segment-anything is an algorithm for segmenting objects in images based on language text prompts. It combines the two major algorithms of GroundingDINO and segment-anything. It has a good application scenario in semi-automatic annotation. It can classify objects without training. Segmentation is performed, that is, matching of text to image […]
[MySQL] Do you want to know what a database is? Come in and take a look if you think about it
What is a database Preface Officially begin connect mysql Understand mysql first level understanding second level understanding third level understanding piece of cake Meet the pigs running show databases; create database xxx; create table xxx; Mainstream database mysql architecture Types of SQL statements storage engine Foreword Do you have MySQL on hand? It’s best if […]
Analysis of consumer reviews of clothing products based on sentiment analysis + cluster analysis + LDA topic analysis
?♂? Personal homepage: @ aiperson’s personal homepage ?About the author: Python learner I hope everyone will support us and we will make progress together! If the article is helpful to you, Welcome to comment Like Collection Add follow + Table of Contents 1.Project background 2. Introduction to data sets 3.Technical Tools 4. Experimental process 4.1 […]
Based on stm32f103c8t6, HAL library timer control light on and off &&PWM to realize breathing light
1. Basic knowledge of timers Timer classification 1. Basic timer The basic timer is a simple timer that is usually used to generate precise time delays. It has a single 16-bit counter that can achieve different counting speeds by setting the prescaler coefficient. Basic timers are usually used for simple scheduled tasks. 2. Universal timer […]