CSV（ Comma-Separated Values，逗号分隔值）是存储表格数据的常用文件格式。
其实这样的操作，在[[88-R可视化20-R的几种基于ggplot的拼图解决方案]] 中，就已经提到了。这里来进行一下总结。
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关关的刷题日记83 – Leetcode 441. Arranging Coins 题目 You have a total of n coins that you want to form in a staircase shape, where every k-th row must have exactly k coins. Given n, find the total number of full staircase rows that can be formed. n is a non-negati
你有n枚硬币，想要组成一个阶梯形状，其中第k行放置k枚硬币。 给定n，计算可以形成的满阶梯的最大行数。 n是非负整数，并且在32位带符号整数范围之内。
算法的重要性，我就不多说了吧，想去大厂，就必须要经过基础知识和业务逻辑面试+算法面试。所以，为了提高大家的算法能力，这个公众号后续每天带大家做一道算法题，题目就从LeetCode上面选 ！
你总共有 n 枚硬币，你需要将它们摆成一个阶梯形状，第 k 行就必须正好有 k 枚硬币。
题目描述： You have a total of n coins that you want to form in a staircase shape, where every k-th row must have exactly k coins. Given n, find the total number of full staircase rows that can be formed. n is a non-negative integer and fits within the range of
•The tile Manage Sales Quotationsis part of the business catalog Sales –Quotation Processing. The sales representative can use this tile to launch the list report application based on SAP Fiori. •The business catalog has to be assigned to business users
B. Game of the Rows time limit per test：1 second memory limit per test：256 megabytes input：standard input output：standard output Daenerys Targaryen has an army consisting of k groups of soldiers, the i-th group contains ai soldiers. She wants to bring her
同时MarginLayoutParams extends LayoutParams 也作为ViewGroup类里面的静态内部类
题目地址：https://leetcode.com/problems/arranging-coins/description/
•The tile Manage Sales Contracts is part of the business catalog Sales –Contract Processing. The sales representative can use this tile to launch the list report application based on SAP Fiori. •The business catalog has to be assigned to business users v
题目描述 Farmer John's cows are lined up in a row and numbered 1..N. The cows are conducting another one of their strange protests, so each cow i is holding up a sign with an integer FJ knows the mob of cows will behave if they are properly grouped and t
Andy, 8, has a dream - he wants to produce his very own dictionary. This is not an easy task for him, as the number of words that he knows is, well, not quite enough. Instead of thinking up all the words himself, he has a briliant idea. From his bookshelf he would pick one of his favourite story books, from which he would copy out all the distinct words. By arranging the words in alphabetical order, he is done! Of course, it is a really time-consuming job, and this is where a computer program is helpful. You are asked to write a program that lists all the different words in the input text. In this problem, a word is defined as a consecutive sequence of alphabets, in upper and/or lower case. Words with only one letter are also to be considered. Furthermore, your program must be CaSe InSeNsItIvE. For example, words like “Apple”, “apple” or “APPLE” must be considered the same.
•The tile Manage Sales Orders is part of the business catalog Sales –Sales Order Processing. The sales representative can use this tile to launch the list report application based on SAP Fiori. •The business catalog has to be assigned to business users v
在查阅文献的过程中，看到了几幅非常不错的出版图，今天就跟着小编一起学习下，他们是怎么使用 R 绘制出来的。
在发表论文时候，经常会看到高大上的图片排列及绘制。通常我们用软件（spss+excel等）绘制好图片，都是单个figure。有时候很有必要将这些图片进行组合。一般都是PPT或者PS进行
本文介绍了Linux pstack工具的原理、使用方法以及其在多线程程序调试中的重要作用。pstack通过GDB的thread apply all bt命令，可以打印出所有线程的栈信息，从而帮助开发人员定位多线程程序中的问题。
TensorFlow 是 Google 大脑团队开源的一套机器学习框架，我对这个东西也是刚刚接触，所以更多的信息请你参考官网：https://www.tensorflow.org。
Snuke has N integers: 1,2,[ldots],N. He will choose K of them and give those to Takahashi.
示例 1: 输入: [ [1,2], [2,3], [3,4], [1,3] ] 输出: 1 解释: 移除 [1,3] 后，剩下的区间没有重叠。
能制作这样图表的工具很多， 我比较喜欢ggplot2+AI， 当然，或许有高手可以独立使用ggplot2调整全部图表细节，不过，我做不到。我只能做到的是可以绘制出几乎全部的图表的雏形，而且我个人觉得，把ggplot2学习到这个程度就足够了。
Simple positional formatting is probably the most common use-case. Use it if the order of your arguments is not likely to change and you only have very few elements you want to concatenate.
Ways to Improve Security in Web Application Development. Web application security is a must. Web applications empower relationships to suit remote workers, similarly as access to a globalized market of related customers. Regardless, these applications require that affiliations are constantly open and that data move is secure. An application break or affiliation parcel can cause basic impacts to you and your customers.
Web Design plays an important role in any marketing strategy or positively impacting user experience. The site’s usability, aesthetics, and even formatting are significant when it comes to a company’s long-term success.
data_frame() is a better way than data.frame() for creating data frames. Benefits of data_frame():
Gauss_Seidel.m %% Homework 12 (b) % Heat equation with variable coeficients using Gauss-Seidel Method: % % $\frac{\partial}{\partial x}\left (k(x,y)\frac{\partial{T}}{\partial{x}} \right )+\frac{\partial}{\partial x}\left (k(x,y)\frac{\partial{T}}{\partia
ChoosingaWebDevelopment2.png How To Choose The Best Technology Stack For Web Application Development
Video generation models as world simulators 视频生成模型作为世界模拟器
Mininet是一款非常轻巧但是功能很强大的网络模拟器。网络研究者可以使用Mininet创建支持OpenFlow的SDN拓扑。随着SDN研究的发展，多控制器协作成为未来的研究方向，所以使用Minine
What is a web application? How to Make a Web Application Step by Step? A smart PC program worked wit
翻译内容： NoSQL Distilled 第四章 Distribution Models 作者简介： 本节摘要： 各位周末好，今天我们主要讨论有关分布模型中分片（sharding）
顾名思义，机器学习是计算机编程的科学，通过它可以从不同类型的数据中学习。Arthur Samuel给出的更一般的定义是 - “机器学习是一个研究领域，它使计算机无需明确编程即可学习。”它们通常用于解决各种类型的生活问题。
The 2020 Java Developer Roadmap is comprised of long stretches of understanding and furthermore a portion of the unhampered ways about how you ought to turn into the Java master. This guide will absolutely assist you in answering different such consumi
概要： 这篇博客和博客 学习笔记|主成分分析[PCA]及其若干应用、学习笔记|独立成分分析(ICA, FastICA)及应用 属于一个系列，简单地介绍非负矩阵分解(Non-negative Matrix Factorization, NMF)。 关键字： 非负矩阵分解; NMF
可以看到各个细胞亚群，都是有CD4基因表达的，我们虽然命名了 Naive CD4 T和Memory CD4 T"，但是它们并没有特异性的高表达CD4基因哦！
原文地址：Unit testing best practices PS:本文未翻译原文的全部内容，以下为译文。
Cyber-dojo.org是编程操练者的乐园。下面是这个网站上的43个编程操练题目，供编程操练爱好者参考。
最近好多事情，最近前端分享会也如期而至，有幸这次分享会，正好周末有时间，做个总结吧。
1. Improving Recommendation Systems with User Personality Inferred from Product Reviews, WSDM2023
腾讯ISUX isux.tencent.com 社交用户体验设计 在本文中，我们将分享对于最近又逐渐流行起来的角色服务的见解。随着IT世界成为新维度的社交场合，在虚拟世界中扮演和代表我的avatar的存在与重要性正在与日俱增。与现实相似，用户把时间和金钱花在装饰avatar上来获得自我满足感，或者为了吸引其他人，围绕虚拟空间移动他们的角色和他人见面与交流。随着智能手机的发展，用于特定游戏或门户网站配置文件里的 avatar，最近开始越来越接近我们的生活。 In this article
This blog post explains how computers running the Linux kernel send packets, as well as how to monitor and tune each component of the networking stack as packets flow from user programs to network hardware.
从第 416 到第 460 题，跳过了需要付费的题目。付费的题目会单独放在一篇里面。
这个练习使用的是英文的单词统计，使用split通过单词中间的空格来做区分，在遍历的过程中通过对【字典】类型进行【字典推导式】的处理来计算每个单词出现的频次。但是由于过程中我们通过re的正则表达式来替换掉了很多的符号，并没有替换成空，故而空的数量应该是最多的。遍历的时候遇到''我们就跳过一下就行了。
Contributed by: StoryChief AI Reference: 7 Powerful ChatGPT Prompts to Create SEO Content Faster 供稿人：StoryChief AI 参考：https://storychief.io/blog/chatgpt-prompts-seo
80% of the end-user response time is spent on the front-end. Most of this time is tied up in downloading all the components in the page: images, stylesheets, scripts, Flash, etc. Reducing the number of components in turn reduces the number of HTTP requests required to render the page. This is the key to faster pages.
Effective Lambda Expressions in Java | by Bubu Tripathy | Medium
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