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In this article, we will learn how to generate random hexadecimal number values in Java. Random hexadecimal values are used in many applications, like unique identifiers, cryptographic keys, session tokens, or colour codes. We will discuss three different ways to generate random hexadecimal values in Java − Using Random – A simple, fast method to make random hexadecimal values. Using SecureRandom – Best for secure random hexadecimal numbers. Using BigInteger – Helps produce large random hexadecimal numbers. 1. Using Random In this approach, we use the Random class to produce random numbers from 0 to 15. After ... Read More
James Arthur Gosling, also known as the Father of Java, is one of the greatest minds in computer science and programming history. He created the Java programming language in 1994, which became a revolutionary invention that transformed the software development industry. Java lets developers run a single code on any device, which makes it a platform-independent language. Other than java, Gosling has worked on several technical areas such as Artificial intelligence, software engineering and cloud computing. Early life and education James Gosling was born on May 19, 1955, in Calgary, Alberta, Canada. He developed an interest in computers at an ... Read More
Arrays are one of the most fundamental data structures in programming, and they are used to store elements of the same data type in contiguous memory locations. If you are not familiar with the array concept, do check out this article on Arrays. In this article, we will learn how to increment every element of an array by one and print the incremented array. For example, If the input array is [3, 7, 10] The output should be [4, 8, 11] We can solve this problem using different approaches − Using for-loop Using java streams Using arrays.setAll() ... Read More
What is hyperfactorial? The hyperfactorial of a number is the product of numbers from 1 to the given number where each number is raised to the power of itself. For example, the hyperfactorial of 4 will be − = 1^1 * 2^2 * 3^3 * 4^4 = 1*4*27*256 = 27648 So we can say that the formula for finding hyperfactorial is − H(n)=1^1 * 2^2 *3^3 * 4^4 * 5^5 * . . . . . . . . . * n^n In this article, we will learn different approaches to find the hyperfactorial of a number, ... Read More
What is string padding? String padding means adding extra spaces or characters to the string to reach a specified length. This extra character or space can be added before the string, after the string, or on both sides of the string. This is useful for formatting output or aligning text in documents in order to improve the overall appearance of the content. For example, while displaying a table, padding helps to align the content properly so that every column in the lineup is correct. Approaches to pad a string in Java There are multiple approaches to pad a string in ... Read More
Problem DescriptionA 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 1Input:side = 6 unitsOutput:36 square unitsExplanationUsing the formula to calculate the area of the square: side × side = 6 × 6 = 36 square unitsExample 2Input:side ... Read More
In JavaScript, since functions are objects we can pass them as parameters to another function. These functions can then be called inside another function and the passed function is referred to as a callback function. Why Use Callbacks? The following are the advantages of using JavaScript Callbacks − Encapsulation: Separates logic for better modularity. Reusability: Allows different callback functions for different processing needs. Asynchronous Execution: Commonly used in event handling, API requests, and file operations. Using a Callback Function Below is an example where an add() ... Read More
In this article, we will learn to calculate the union of two objects in JavaScript. The union of two objects results in a new object that contains all the properties of both objects. What is the Union of Two Objects? The union of two objects is the process of combining the properties of both objects into a single object. For example Input − const obj1 = { name: " ", email: " " }; const obj2 = { name: ['x'], email: ['y']}; Output − const output = { name: {" ", [x]}, email: {" ", [y]} }; Different Approaches ... Read More
In this article, we will learn to calculate the union of two objects in JavaScript. The union of two objects results in a new object that contains all the properties of both objects. What is the Union of Two Objects? The union of two objects is the process of combining the properties of both objects into a single object. For example Input − const obj1 = { name: " ", email: " " }; const obj2 = { name: ['x'], email: ['y']}; Output − const output = { name: {" ", [x]}, email: {" ", [y]} }; Different Approaches ... Read More
In this article, we will learn to calculate the area of a Tetrahedron using Java. A tetrahedron is a type of polyhedron that consists of four triangular faces. What is a tetrahedron? A tetrahedron is a three-dimensional polyhedron with four triangular faces, six edges, and four vertices. If all its faces are equilateral triangles, it is called a regular tetrahedron. The surface area of a regular tetrahedron can be calculated using the formula − 𝐴 = sqrt{3} . s^2 Where A is the surface area, where s is the length of a side of the tetrahedron. Calculating the Area of ... Read More