Articles tagged "Advanced"
Hand-picked programming notes, guides, and tutorials for your placement preparation.
Bit Manipulation Tricks Every Developer Should Know (With Examples)
Master the most useful bit manipulation tricks used in coding interviews and competitive programming. Learn how bitwise operators work, perform fast binary operations, count set bits with Brian Kernighan’s algorithm, use bit masking, and solve common interview problems with clear explanations, practical examples, and a handy cheat sheet.
LeetCode Patterns Every Student Should Know (2026 Guide)
Stop solving LeetCode problems randomly. Learn the seven core coding patterns that power most interview questions at top tech companies. This guide covers Two Pointers, Sliding Window, Binary Search, BFS, DFS, Backtracking, Merge Intervals, and more, with practical examples and study strategies to help you recognize patterns instead of memorizing solutions.
Oracle Cloud Free Tier (2026): The Ultimate Guide to Free Deployment
Oracle Cloud's Always Free Tier offers one of the most generous permanent free cloud platforms available. Learn how to deploy Docker, Node.js, PostgreSQL, and full-stack applications on OCI's ARM instances while avoiding common pitfalls like capacity errors, firewall issues, and account restrictions.
Kadane's Algorithm Explained: Maximum Subarray Sum in O(N)
Master Kadane's Algorithm with an intuitive explanation, visual walkthrough, Python implementation, and interview tips. Learn how this elegant dynamic programming technique finds the maximum subarray sum in O(N) time while handling tricky edge cases like all-negative arrays.
Prefix Sum vs Difference Array: Master Range Queries and Range Updates in DSA
Struggling with Time Limit Exceeded (TLE) errors in array problems? Learn how Prefix Sums and Difference Arrays transform expensive O(N×Q) solutions into efficient O(N+Q) algorithms. This guide covers the intuition, formulas, Python implementations, complexity analysis, and interview tips you need to master both techniques.
Razorpay Django Integration: Secure Payment Gateway with Signature Verification
Integrating Razorpay into Django isn't just about opening a checkout popup—it's about building a secure payment workflow. This step-by-step guide walks you through creating Razorpay orders, implementing the checkout page, verifying payment signatures on the backend, and preparing your application for production with webhooks, refunds, and idempotency.
System Design Patterns for Microservices Architecture: A Complete Guide
Explore essential microservices design patterns: API Gateway, Circuit Breaker, Saga, CQRS, Event Sourcing, and Strangler Fig for scalable systems.
Database Indexing Strategies for High-Performance Queries
Learn B-Tree, Hash, GiST, and GIN indexes, composite index design, covering indexes, and when to use each type for optimal query performance.
Python Decorators and Generators: Advanced Patterns
Dive deep into Python decorators with arguments, class-based decorators, and generator-based pipelines for memory-efficient data processing.
Advanced SQL: Window Functions, CTEs, and Query Optimization
Go beyond basic SELECT queries. Master ROW_NUMBER, RANK, Common Table Expressions, and query execution plans.
System Design 101: Scaling from 0 to 1 Million Users
Learn the fundamental components needed to scale an application from a single host database server to a highly available multi-region system.
Top 25 Python Interview Questions (2026 Edition)
Prepare for your next Python interview with these essential questions covering decorators, generators, memory management, and OOP principles.