Tree Graph DSA QA
⸻ Tree Answers Basic Questions 1. What is the difference between a binary tree and a binary search tree (BST)? • A binary tree is a tree where each node…
NeetCode 150
CategoryPatterns# QuestionsEasyMediumHardComplexity (Avg Case)ArraysSliding Window, Two Pointers, Prefix Sum18594O(N) - O(N log N)StringsHashing, Two Pointers, Sliding Window14473O(N)Linked ListFast & Slow Pointers, Recursion10352O(N)Stacks & QueuesMonotonic Stack, LRU Cache12273O(N)Binary SearchSearch Space Reduction,…
NeetCode 150 – Study Roadmap
🚀 NeetCode 150 - Priority-Based Study Roadmap This roadmap is structured priority-wise, optimizing for FAANG interviews. It assumes 2-3 hours of practice per day and categorizes topics into high-priority, mid-priority,…
DSA Advanced Optimization Techniques
Optimization TechniqueUsed ForTime Complexity ImprovementSpace Complexity ImprovementExplanationSpace Optimization (In-Place Computation)Modify array in-place (e.g., Remove Duplicates)No changeO(N) → O(1)Modifies input data without extra space to save memory. Used in in-place sorting,…
DSA Optimization Techniques
Below is a breakdown of essential optimization techniques used in arrays, graphs, dynamic programming, and advanced data structures. 🔹 1. Preprocessing Techniques 👉 Use extra space to reduce time complexity.…
AWS ECS
AWS ECS (Elastic Container Service) Amazon Elastic Container Service (ECS) is a fully managed container orchestration service that allows you to run, stop, and manage Docker containers on a cluster of…
Event-Driven Architecture
Here’s a cheatsheet for Event-Driven Architecture (EDA), summarizing key concepts, patterns, and best practices used to design systems where components communicate by producing and consuming events. 1. Key Concepts in…
Messaging Patterns
Here's a Messaging Patterns Cheatsheet, providing an overview of key messaging patterns commonly used in distributed systems and integrations: 1. Point-to-Point (P2P) Messaging Definition: One producer sends a message directly…
Data Integration Patterns
Here’s a concise cheatsheet for common Data Integration Patterns, designed to guide decisions around integrating data between systems or platforms: 1. Batch Processing Definition: Data is collected, processed, and moved…
AWS Kinesis
AWS Kinesis AWS Kinesis is a fully managed service that makes it easy to collect, process, and analyze real-time streaming data at scale. It enables real-time analytics and facilitates applications like…