Reverse Array
Given an integer array nums, your task is to rotate it to the right by k positions, where k is a non-negative integer. Example Solution 🧠Key Learnings From the Rotate Array problem, I learned how to use the reverse technique with two pointers to perform array rotation efficiently in-place. This approach deepened my understanding
React – Quick Recap
A complete React 2025 recap covering core concepts, hooks, state management, routing, forms, and optimization. Includes modern React 18+ features like concurrent rendering, automatic batching, and server components for efficient, scalable apps.
Angular – Quick Recap
Angular Quick Recap provides a concise, developer-friendly overview of Angular’s core concepts, designed for rapid revision or a quick refresher before coding, interviews, or project work.
Types of Service Architectures
1. Monolithic Architecture 2. Layered (n-Tier) Architecture 3. Service-Oriented Architecture (SOA) 4. Microservices Architecture 5. Event-Driven Architecture (EDA) 6. Serverless (FaaS) Architecture 7. Microkernel (Plug-in) Architecture 8. API-First / API-Led Connectivity 9. Cloud-Native Architecture 10. Mesh / Service Mesh Architecture
LLD – BookMyShow
Overview We need to design a movie ticket booking system. It should handle cinemas, halls, movies, shows, and seating across cities. The system must prevent double booking even with concurrent users, support secure payments, and send timely confirmations and notifications after successful reservations. Q. Do you want we to design entity only or working solution?
Design a Ride Service Like Uber, OLA
What is Ride Service? Ride service like OLA and UBER is a platform where rider and driver both can register and rider can avail drive service provided by driver. Functional Requirement Non Functional Requirement Storage & Bandwidth Estimation India Market (December 2024)Â Global Context (2024-2025)Â For design as we are planning for future, Lets assume