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Javascript Articles
Page 161 of 534
JavaScript Program to check idempotent matrix
An idempotent matrix is a square matrix that has the same number of rows and columns and when we multiply the matrix by itself the result will be equal to the same matrix. We will be given a matrix and we have to find that whether it is an idempotent matrix or not. Mathematically − If the given matrix ix M, then of M to be an idempotent matrix is should follow the property − M*M = M Multiplication of Matrix Multiplication of a matrix with another matrix produces another matrix and if the given matrix is the square ...
Read MoreJavaScript Program to Count Rotations Divisible by 8
Problem Statement − We have given a number. We need to rotate the number and need to find the total number of rotations divisible by 8. Here, we will learn two different approaches to counting rotations divisible by 8. Rotate the Number and Check if Rotation is Divisible by 8 The first approach is to rotate numbers and get every possible rotation one by one. Also, check if rotation is divisible by 8. If yes, add 1 to the count. Syntax Users can follow the syntax below to count rotations divisible by 8 by rotating the numbers. for ( ) ...
Read MoreJavaScript Program to Count Rotations Divisible by 4
In this tutorial, we will learn to count the total number of rotations divisible by 4 for the given number. Problem statement − We have given a number value. We need to rotate numbers in clockwise or anti-clockwise directions and count the total number of rotations divisible by 4. Here, we will learn two different approaches to counting rotations divisible by 4. Rotate the Number and Check if it is Divisible by 4 In this approach, we will convert the number to a string first. We can make n rotations for the string of length n. We will remove the ...
Read MoreJavaScript Program to Count Inversions of size three in a given array
In this tutorial, we will learn to count inversions of size three in a given array. Problem statement − We have given an array of length n containing the different numeric entries. We need to find the total number of pairs of numbers of size 3 such that arr[i] > arr[j] > arr[k], where I < j < k. Here, we will learn the brute force approach first and after that, we will optimize its time and space complexity. Using the Brute Force Approach In the brute force approach, we will use three nested for loops to find a count ...
Read MoreHow to Show Today\'s Year And Random 4Digit Numbers at the Same Time?
Let's see "How to show the current year and a random 4-digit number at the same time." This can be useful for a variety of reasons, such as creating unique identifiers, tracking dates, or displaying the date in a specific format. By using some simple programming techniques, you can quickly create this effect with minimal coding knowledge. Let's explore how to do it in JavaScript. Let’s dive into the article to get a better understanding of displaying today's year and a random 4-digit number at the same time. Using JavaScript random() method The Math.random() static method provides a floating-point, pseudo-random ...
Read MoreHow to conditionally add a member to an object using JavaScript?
The object is the most important data type of JavaScript. Even everything is an object in JavaScript. For example, Array is an object, and Number, String, and Boolean can also be an object. Sometimes, developers require to insert properties into the object based on some condition. For example, we have an object of the person, and we only require adding the driving licence property if a person is 18 years old. Here, we will learn different approaches to adding a member to an object using JavaScript conditionally. Using the Spread Operator to add a Member to an Object Conditionally The ...
Read MoreHow To Change Text Inside All HTML Tags Using JavaScript
In this article, we are going to perform the task of changing text inside all HTML tags using JavaScript. Let's dive into the article to learn more about changing text within all HTML, but first, let's define HTML tags. What are HTML tags An HTML tag is a segment of markup language used to denote the start and end of an HTML element in an HTML document. HTML tags, which are a component of an HTML element, assist web browsers in turning HTML documents into web pages. For getting better understanding on changing text inside all HTML tags using JavaScript. ...
Read MoreHow to Detect if An \'IMG\' Element Load Has Started And/or a Request Has Been Made to the Server?
Sometimes when inserting images into HTML sites, the image may not load for the following reasons − Because of image URL wrong Network issues The task we are going to perform was detecting if an img element load has started and/or request has made to the server. Before this let’s have a quick view on the HTML tag. HTML tag To insert an image into a webpage, use the HTML tag. In modern websites, images are linked to web pages using the element, which contains space for the image. This prevents websites from directly adding ...
Read MoreJavaScript Program for Rotate the matrix right by K times
The term "perform right rotation on a matrix" refers to shifting each column in the matrix to the right. This operation is repeated "k" times when specified. In other words, it's a right shift of the matrix that occurs "k" times. This program can be implemented using various programming languages but a simple yet effective approach is to consider JavaScript for rotating the matrix right by k times. How to rotate the matrix right by K times? It is straightforward to carry out a right rotation on a matrix by k times, which involves shifting each column of the matrix ...
Read MoreJavaScript Program for Search an element in a sorted and rotated array
When an array is sorted in ascending order and then rotated by some pivot point, it becomes challenging to search for an element using traditional search algorithms. As a developer, you need to find an efficient solution to this problem. In this article, we will guide you through the process of writing a JavaScript program to search for an element in a sorted and rotated array. We will explain the underlying logic and provide you with a step-by-step approach to implementing this program. Problem Statement Before we begin, let's understand the problem statement. We have a sorted array that has ...
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