Introduction Java is an object-oriented programming language. Everything in Java is an object, all the programs, codes, and data reside within classes and objects.  Inheritance, Polymorphism, Encapsulation, Abstraction, classes, and objects are few important concepts of Object-Oriented Programming.  OOPs is ...

Introduction Deleting, inserting, searching, and popping are some basic operations done in the stack data structure. There are a whole lot of problems available with these operations. For example, Inserting element at the bottom of a stack.  Problem Statement Given ...

Table of Contents Introduction The Naive Approach Algorithm Implementation of the Naive Approach The Optimized Approach Algorithm Implementation of the Optimized Approach Frequently Asked Questions Key Takeaways Introduction Let’s imagine a scenario in which we have a rotated sorted array ...

Introduction Before diving into the problem, let’s understand the concept behind the sorted and rotated array for a clear vision. Unlike the standard arrays, the elements are stored in ascending or descending order in a sorted array. For example: We ...

Introduction  Object-Oriented Programming (OOP) is one of the main concepts in the programming world. The concept of OOP is tested in interviews, and hence it becomes essential to know the concepts of OOPs like Inheritance, Abstraction, Encapsulation, and Polymorphism thoroughly.  ...

Introduction Welcome Back, Ninja! Today this article will discuss one of the most frequently asked questions in Google, Apple, Amazon – “The Celebrity Problem”. Let’s start with the problem statement and work our way to the solution. Problem Statement There ...

Introduction Software testing is absolutely necessary for the development of any program or software to validate and verify it for release. Before applications are deployed for end-users, a variety of guidelines and standards must be met. A software can face ...

Introduction Software Testing is a necessary process that involves determining if software products meet the expected requirements of the business and ensures that these applications function without errors. Testing helps in identifying bugs, loopholes, glitches, and defects in the software ...

Introduction Reversing a Queue is one of the most fundamental questions in the queue it is generally not asked directly in interviews but is used to solve various questions asked in interviews. It is crucial to understand the in and ...

Introduction Spooling can be defined as a mediatory process between applications and slower peripherals such as printers and punch card readers. Fundamentally, it is a multivariate method of transferring data between various devices. During spooling, data is sent to temporary ...