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In computer programming, it's essential to keep data well-organized and easy to access and modify. The Vector is a flexible array that can grow or shrink as needed, making it an important data structure for this purpose. In Java, Vectors are especially useful because they allow you to store different types of objects together.In this guide, we’ll learn to swap elements in a Vector in Java. Swapping elements is a common task, especially when sorting or rearranging data. We’ll show two different ways to do this, with examples and clear explanations. Syntax Vector vector = new Vector(); // Create a ... Read More
Linear algebra, a significant area of mathematics that forms the foundation of many fields in physics, engineering, and even computer science, uses concepts like eigenvalues and eigenvectors. In order to solve a variety of differential equations and gain a deeper understanding of the complex aspects of a particular system, both provide a toolset about linear transformations as linear operators, as well as their properties and activity. Let's discuss the mathematical details of eigenvalues and eigenvectors and highlight their applications and differences in this article. What are Eigenvalues? The numerical values associated with the linear transform's eigenvectors are known as eigenvalues. ... Read More
In this article, we will learn about iterative Merge sort in Java. Unlike the traditional iterative Merge Sort, the following Java program implements a recursive merge step while dividing the array and an iterative approach for merging. What is merge sort? Merge Sort is a popular sorting algorithm that follows the Divide and Conquer rule. It recursively divides the array into two halves, sorts each half, and then merges them back in a sorted manner.The following are three main steps to perform Merge sort in Java − Divide: The array is split into two halves ... Read More
In this article, we will learn about JavaScript ArrayBuffer objects. The ArrayBuffer object in JavaScript is a fundamental part of the Web API for efficiently handling binary data. What is ArrayBuffer? The JavaScript ArrayBuffer object represents a generic, fixed-length raw binary data buffer. To manipulate the contents of an ArrayBuffer object we have to create a DataView object as we cannot manipulate the contents directly. We can read and write both using the DataView object. Syntax new ArrayBuffer(byteSize) The byteSize parameter specifies the array buffer size in bytes that will be created. Use Cases of ArrayBuffer Following are the use ... Read More
In this article, we will learn to use the prompt() function in Javascript. The prompt() method in JavaScript allows developers to collect user input through a pop-up dialog box. What is the prompt() Method in JavaScript? The prompt dialog box is very useful when you want to pop-up a text box to get user input. Thus, it enables you to interact with the user. The user needs to fill in the field and then click OK. This dialog box is displayed using a method called prompt(). Syntax var userInput = prompt("Message", "Default value"); The following are the parameters of the ... Read More
In this article, we will learn about concurrency in Java. It allows multiple threads to execute simultaneously, sharing system resources efficiently. One of the methods provided in the Thread class for managing thread execution is the join() method. What is the join() Method? the join () function is used to join the beginning of the execution of a thread to the end of the execution of another thread. This way, it is ensured that the first thread won’t run until the second thread has stopped executing. This function waits for a specific number of milliseconds for the thread to terminate. ... Read More
In this article, we will learn the DatabaseMetaData getProcedureColumns() method in Java. In Java getProcedureColumns(), allows us to retrieve information about the input and output parameters of stored procedures in a database. What is getProcedureColumns()? The getProcedureColumns() method of DatabaseMetaData retrieves a ResultSet containing details about the parameters (input, output, and return values) of a stored procedure. Syntax ResultSet rs = metaData.getProcedureColumns(null, null, "myprocedure", null); This method retrieves the description of the procedure parameter and results in columns of a database/catalog. It accepts 4 parameters − catalog: The catalog name; pass null to get all ... Read More
A square is a closed two-dimensional figure having 4 equal sides. Each angle of a square is 90 degrees. The area of a square is the space enclosed within its four sides. In this problem, we are given the side of a square, and we have to find the area of the square. In this tutorial, we are going to find the area of a given square in Python using different approaches. Example 1 Input: side = 6 units Output: 36 square units Using the formula to calculate the area of the square: side × side = 6 × ... Read More
Computing the average of an array after mapping each element to a value in JavaScript can be done by using the forEach() loop, the parseInt() method, the reduce() method, and the for..of loop. In this article, we are going to fetch all the values from an array and after mapping each element to a numerical value we will calculate its sum thus to compute its average. Given below is an array consisting of values. We will compute the average by summing up the values and then dividing it by the number of values available. Suppose Input is: [1, 2, ... Read More
The fill() function is a built-in function of JavaScript which is used to fill all the elements of an array with a static value. This function modifies the original array and returns the modified array. The fill() function of JavaScript is a simple and basic function used to fill an array with a specified function. In this article, you will understand the usage and functionality of the fill() function of JavaScript. Syntax The basic syntax of the fill() function is mentioned below: array.fill(val, start, end) Let's understand the parameters used in the fill() function. ... Read More