A data structure is a named location that can be used to store and organize data. And, an algorithm is a collection of steps to solve a particular problem. Learning data structures and algorithms allow us to write efficient and optimized computer programs.
Basic Data Structures: Arrays, Strings, Stacks, Queues. Asymptotic analysis (Big-O notation) Basic math operations (addition, subtraction, multiplication, division, exponentiation) Sqrt(n) primality testing.
data structures are divided into two categories: Linear data structure. Non-linear data structure.

HTML (HyperText Markup Language) is the code that is used to structure a web page and its content. For example, content could be structured within a set of paragraphs, a list of bulleted points, or using images and data tables.
HTML—“HyperText Markup Language”—is the language used to tell your web browser what each part of a website is. So, using HTML, you can define headers, paragraphs, links, images, and more, so your browser knows how to structure the web page you're looking at.

HTML (the Hypertext Markup Language) and CSS (Cascading Style Sheets) are two of the core technologies for building Web pages. HTML provides the structure of the page, CSS the (visual and aural) layout, for a variety of devices.
CSS stands for Cascading Style Sheets, and it's used to add style to a web page by dictating how a site is displayed on a browser. CSS is unique in that it doesn't create any new elements, like HTML or JavaScript. Instead, it's a language used to style HTML elements
What is CSS example? CSS (Cascading Style Sheets) is used to style and layout web pages — for example, to alter the font, color, size, and spacing of your content, split it into multiple columns, or add animations and other decorative features.

JavaScript is a text-based programming language used both on the client-side and server-side that allows you to make web pages interactive. Where HTML and CSS are languages that give structure and style to web pages, JavaScript gives web pages interactive elements that engage a user.
The primary use of JavaScript is to build web-based applications. Some of what JavaScript can do for the web includes: adding interactive behavior to web pages like zooming in and out or playing audio/video. creating web and mobile apps, the most popular examples consist of the likes of Netflix and Uber.

Query is a lightweight, "write less, do more", JavaScript library. The purpose of jQuery is to make it much easier to use JavaScript on your website. jQuery takes a lot of common tasks that require many lines of JavaScript code to accomplish, and wraps them into methods that you can call with a single line of code.
JavaScript is an independent language and can exist on its own. jQuery is a JavaScript library. It would not have been invented had JavaScript was not there. jQuery is still dependent on JavaScript as it has to be converted to JavaScript for the browser in-built JavaScript engine to interpret and run it.

React is a declarative, efficient, and flexible JavaScript library for building user interfaces. It lets you compose complex UIs from small and isolated pieces of code called “components”. We'll get to the funny XML-like tags soon. We use components to tell React what we want to see on the screen.
React is a declarative, efficient, and flexible JavaScript library for building user interfaces. 'V' denotes the view in MVC. ReactJS is an open-source, component-based front end library responsible only for the view layer of the application. It is maintained by Facebook.

Bootstrap is a free, open source front-end development framework for the creation of websites and web apps. Designed to enable responsive development of mobile-first websites, Bootstrap provides a collection of syntax for template designs.
CSS represent the style and the appearance of content like font, color, margin, padding, etc. Bootstrap is a free and open-source CSS Framework that is used for developing responsive website. CSS does not have a grid system. Bootstrap is based on-grid system.

Node. js (Node) is an open source development platform for executing JavaScript code server-side. Node is useful for developing applications that require a persistent connection from the browser to the server and is often used for real-time applications such as chat, news feeds and web push notifications.
Node. js is primarily used for non-blocking, event-driven servers, due to its single-threaded nature. It's used for traditional web sites and back-end API services, but was designed with real-time, push-based architectures in mind.
It is a used as backend service where javascript works on the server-side of the application. This way javascript is used on both frontend and backend. Node. js runs on chrome v8 engine which converts javascript code into machine code, it is highly scalable, lightweight, fast, and data-intensive.

What is PHP?
PHP is an acronym for "PHP: Hypertext Preprocessor" PHP is a widely-used, open source scripting language.
PHP (Hypertext Preprocessor) is known as a general-purpose scripting language that can be used to develop dynamic and interactive websites. It was among the first server-side languages that could be embedded into HTML, making it easier to add functionality to web pages without needing to call external files for data.
PHP is an open-source server-side scripting language that many devs use for web development. It is also a general-purpose language that you can use to make lots of projects, including Graphical User Interfaces (GUIs).

javaScript Object Notation (JSON) is a standard text-based format for representing structured data based on JavaScript object syntax. It is commonly used for transmitting data in web applications (e.g., sending some data from the server to the client, so it can be displayed on a web page, or vice versa).
JavaScript Object Notation, more commonly known by the acronym JSON, is an open data interchange format that is both human and machine-readable. Despite the name JavaScript Object Notation, JSON is independent of any programming language and is a common API output in a wide variety of applications.
A JSON object contains zero, one, or more key-value pairs, also called properties. The object is surrounded by curly braces {} . Every key-value pair is separated by a comma. The order of the key-value pair is irrelevant.

VueJS is primarily used to build web interfaces and one-page applications. In saying that, it can also be applied to both desktop and mobile app development thanks to the HTML extensions and JS base working in tandem with an Electron framework – making it a heavily favoured frontend tool.
Vue. js grew from a one-man project to one of the most adored JavaScript frameworks in just a few years. First publicly released in 2014 by ex-Googler Evan You, Vue. js is an open-source front-end JavaScript framework for building web user interfaces and single page applications (SPAs).
In fact, Vue is better for building complex web apps than React.

AngularJS is a structural framework for dynamic web apps. It lets you use HTML as your template language and lets you extend HTML's syntax to express your application's components clearly and succinctly. AngularJS's data binding and dependency injection eliminate much of the code you would otherwise have to write.
Conclusion. Both are the two different web technologies used for developing web applications. JavaScript is a programming language, whereas AngularJS is an open-source framework and based on MVC architecture. JavaScript is mainly written for websites to run in the client's browser.
Use Angular when you need to design web apps for all kinds of environments, especially: Dynamic web apps: Where the content and some components are displayed according to the user who is accessing and the client (web or mobile) that is consuming.

TypeScript is an open-source, object-oriented language developed and maintained by Microsoft, licensed under Apache 2 license. TypeScript extends JavaScript by adding data types, classes, and other object-oriented features with type-checking. It is a typed superset of JavaScript that compiles to plain JavaScript.
TypeScript is an object-oriented programming language developed by Microsoft Corporation, whereas JavaScript is the programming language for the web. TypeScript is an open-source language to build large-scale web apps, whereas JavaScript is a server-side programming language that helps to develop interactive web pages.

Perl actually stands for "Practical Extraction and Report Language," but you don't really need to know that unless you want to impress your nerd friends. Perl is a scripting language which uses a syntax similar to C/C++. It is commonly used by Web programmers to create scripts for Web servers.
Perl is a high-level, interpreted, general-purpose programming language originally developed for text manipulation. It borrows many features from C and Shell script and is used for system administration, networking, and other applications that involve user interfaces.
Perl is an Objected Oriented, dynamic and interpreter based programming language. In object-oriented programming, we have three main aspects, which are, object, class, and methods. An object is a data type which can be specifically called as an instance of the class to which it belongs.

Tailwind CSS makes it quicker to write and maintain the code of your application. By using this utility-first framework, you don't have to write custom CSS to style your application. Instead, you can use utility classes to control the padding, margin, color, font, shadow, and more of your application.
TailwindCSS is very popular and has a lot of advantages for experienced developers who just need utility classes to quickly build beautiful custom designs and move on to other aspects of their application, while it isn't bad (per se) for someone who just finished learning HTML to learn Tailwind, I think it is bad to..
Because of the built-in classes, Tailwind CSS is quite learning-intensive. Even for experienced developers, it can be a challenge to learn how to use and fully utilize the pre-built classes. But, of course, as with any other development task, practice makes perfect.

Python is a computer programming language often used to build websites and software, automate tasks, and conduct data analysis. Python is a general-purpose language, meaning it can be used to create a variety of different programs and isn't specialized for any specific problems.
Python is an interpreted, object-oriented, high-level programming language with dynamic semantics.
Python is often used as a support language for software developers, for build control and management, testing, and in many other ways. SCons for build control. Buildbot and Apache Gump for automated continuous compilation and testing.

What is Sass used for?
Sass (which stands for 'Syntactically awesome style sheets) is an extension of CSS that enables you to use things like variables, nested rules, inline imports and more. It also helps to keep things organised and allows you to create style sheets faster. Sass is compatible with all versions of CSS.
SCSS contains all the features of CSS and contains more features that are not present in CSS which makes it a good choice for developers to use it. SCSS is full of advanced features. SCSS offers variables, you can shorten your code by using variables. It is a great advantage over conventional CSS.
SASS is a CSS preprocessor, which makes it basically an indistinguishable thing from CSS. Being a preprocessor, a code is done in Sass, and later the code is assembled into CSS.

Kotlin is a static type, object-oriented programing (OOP) language that is interoperable with the Java virtual machine, Java libraries and Android. Kotlin saves time for developers as the less verbose language provides briefer and less redundant code. Kotlin can be compiled into JavaScript or an LLVM encoder.
Kotlin can be used for any kind of development, be it server-side, client-side web and Android. With Kotlin/Native currently in the works, support for other platforms such as embedded systems, macOS and iOS is coming.
Kotlin is an Android-compatible language that is concise, expressive, and designed to be type- and null-safe. It works with the Java language seamlessly, so it makes it easy for developers who love the Java language to keep using it but also incrementally add Kotlin code and leverage Kotlin libraries.