We are given a string and we have to find the minimum number of different character that we need to insert in the given string at any place so that the final string will be palindrome. A palindrome is a string that is just equal to the reverse of it. This problem is of dynamic programming, so we will first go for the recursive approach, then we will memorize it, and at the end we will see the tabulation of the memorization approach. Recursive ApproachExample const max = 1e5; // defining the upper limit // function to ... Read More

In C programming language we have a function that takes a single string or character array as the parameter and returns an integer that may be represented by the given string, if the current string is invalid then it reads only up to the first valid index and will return that value. We will see the complete code with the explanation. Sample Examples Input 1 string S = "-9845" Output 1 -9845 Explanation We are given a string that represents a number so we have just got the same output. Input 2: string str = "90 uy78" Output 2 ... Read More

In Python, we can run Javascript using the PyExecJS library or the js2py library of Python. The PyExecJs library provides a consistent API for running JavaScript code from within Python using a variety of JavaScript engines, including Node.js, JavaScriptCore, and Google's V8 engine. The js2py library allows you to execute JavaScript code from within Python by parsing the JavaScript code and interpreting it in Python. This article will teach us how to run javascript from Python using the PyExecJS library. Method 1: Using the PyExecJS library The PyExecJs library provides a simple interface for executing JavaScript code. It allows developers ... Read More

Introduction ONLYOFFICE Docs is a powerful self-hosted online office suite that allows users to edit and collaborate on documents. It offers advanced features such as document co-authoring, real-time editing, revision history, and third-party integrations. ONLYOFFICE is an open-source platform that works with different languages and frameworks. Angular, on the other hand, is a popular front-end framework for building web applications. It was developed by Google and provides robust support for building dynamic and scalable applications. With Angular, you can create complex web applications with minimal code. Prerequisites Required Software and Tools First, you will need to have Node.js installed. ... Read More

The tag is used to specify a division. It means a container or a section in an HTML page. Sometimes, inside a div container, text and icons are both needed. And sometimes, the need is to align the text on the left while putting the icon on the right in the same line. The CSS or Cascading Style Sheets means style specifications that are used for formatting an HTML document. It is used to give the style to the web page and its elements. In this HTML-CSS article, using three different examples, the ways to show how to ... Read More

JavaScript is a dynamic programming language which can be used on both client side and server side. JavaScript is used to create interactive webpages. It has many frameworks such as React JS, Angular JS, Node JS etc. JavaScript provides some methods using which the index of the specified element can be obtained. indexOf and findIndex are those methods. The indexOf Function in JavaScript The indexOf function in JavaScript allows us to search for an element in an array and returns the first found index in that array. If it can't find the element, then -1 is returned. The syntax of ... Read More

HTTP requests are frequently used in web development to send and receive data from a server. GET and POST queries are two of the most frequently utilised HTTP requests. It is crucial for web developers to comprehend the distinctions between these two request kinds if they wish to build apps that are both secure and effective. GET and POST requests serve different functions and have different properties. Data can be retrieved from a server using GET queries and submitted to a server using POST requests. POST requests are used for requests that alter or generate data on the server, whereas ... Read More

In order to work with the Excel.js, you need to first install the package as a dependency in your project. To install Excel.js in your project, you need to run the following command − npm install exceljs Once you run the above command, Excel.js will be installed as a dependency in your project. In all the examples used in this tutorial, we will work with "xlsx" files that are open XML spreadsheet files used in Microsoft Excel. Working on ExcelJS Cells In the example shown below, we are working with Excel sheet cells. To get a reference of a ... Read More

Web scraping is one of the best ways in which one can automate the process of data collection from the web. Normally we refer to a web scraper as a "crawler" who simply surfs the web and then gives us the scraped data from the pages that we selected. There are many reasons for automating the data scraping process as it is much easier than the process of manually extracting the data from different web pages. Scraping is also a very good solution when the web page that we want to extract the data from doesn't provide us with any ... Read More

In this tutorial, we will understand how to use rollup.js to bundle JavaScript files. Before we do that, the first step is to get familiar with the JavaScript module bundler called Rollup, which compiles the files of multiple sources into a single bundle. Rollup is similar to webpack and Browserify. It is more popular than many of the other bundlers out there because of its ability to keep the files small even after bundling them into a single unit. There are multiple features that Rollup brings to the table, some of them are mentioned below − Development is ... Read More