⭐ Introduction These problems appear again and again in: If you can solve these confidently, you are 90% interview-ready. 🔹 1. Reverse a String Checks: String handling, loops 🔹 2. Check Palindrome Checks: Logic, string/number manipulation 🔹 3. Find Factorial Checks: Recursion / loops 🔹 4. Fibonacci Series Checks: Loops, logic 🔹 5. Check Prime … Read more
⭐ Introduction System Design interviews test how you think, not how fast you code. Interviewers evaluate:✔ Architecture thinking✔ Scalability & performance✔ OOPS + SOLID usage✔ Real-world trade-offs✔ Communication skills This article covers most asked system design interview questions with clear explanations and design approach, not just theory. 🔹 1. What is System Design? System Design … Read more
⭐ Introduction A Machine Coding Round tests how well you can: ✔ Design clean classes✔ Apply OOPS principles✔ Write working, readable code quickly✔ Think in terms of low-level design (LLD)✔ Handle real-world requirements This round is not about algorithms — it is about design + implementation. 🎯 What Interviewers Expect In 60–90 minutes, you should: … Read more
⭐ Introduction Advanced OOPS interviews focus on design thinking, real-world application, and clean architecture, not just definitions. Interviewers expect you to:✔ Justify design choices✔ Compare OOPS with alternative approaches✔ Handle scalability and extensibility✔ Apply OOPS in large systems 🔹 1. How does OOPS help in designing scalable systems? OOPS promotes: This allows systems to grow … Read more
Programming has evolved over the years from simple step-by-step instructions to more structured and organized approaches. One of the most powerful approaches is Object-Oriented Programming (OOP). Let’s explore what OOP is, why it is important, and how it makes software development easier and more effective. What is OOP? Object-Oriented Programming (OOP) is a programming paradigm … Read more
When writing scalable applications in C#, developers often compare Singleton vs Static Class. Both restrict object creation and provide global access, but their purpose and memory usage are completely different. This article explains the similarities, differences, memory management, advantages, and real-time examples to help you choose the right approach. What Is a Static Class in … Read more
Polymorphism is one of the four key principles of Object-Oriented Programming (OOP) in C#, along with Encapsulation, Inheritance, and Abstraction.The word Polymorphism comes from the Greek words poly (many) and morph (forms), meaning “many forms.” In simple terms, polymorphism allows one action to behave differently based on the object that performs it.Let’s explore this important … Read more
💡 Introduction In today’s fast-moving software world, businesses often face the challenge of integrating legacy systems with modern applications. A perfect example is when a new billing system works with JSON, but the old billing system still processes only XML. Instead of rewriting or discarding the old code, we can solve this compatibility issue using … Read more
✅ Introduction In software design, object creation often becomes complex—especially when handling deeply nested or repeatable structures. Two powerful creational design patterns in C#, the Builder Pattern and Prototype Pattern, solve these challenges elegantly. When combined with generics, these patterns provide a type-safe, reusable, and flexible approach to object construction and cloning. In this article, … Read more
✅ Introduction The Builder Design Pattern is one of the most popular Creational Design Patterns in C#. It helps construct complex objects step by step and allows creating different variations of an object using the same construction process. In this guide, we’ll cover: 🔧 Why Use the Builder Design Pattern? You should consider using the … Read more