📂 4-MONTH ROADMAP: DSA + MERN + SYSTEM DESIGN WITH AI
│
├── 📂 MONTH 01 — DSA
│ ├── 📂 Week 01 — C++ & Complexity
│ │ ├── 📄 C++ & STL
│ │ ├── 📄 Time & Space Complexity
│ │ └── 📄 Arrays & Strings
│ ├── 📂 Week 02 — Searching & Sorting
│ │ ├── 📄 Binary Search
│ │ ├── 📄 Two Pointers
│ │ └── 📄 Sliding Window
│ ├── 📂 Week 03 — Data Structures
│ │ ├── 📄 Linked Lists
│ │ ├── 📄 Stacks & Queues
│ │ └── 📄 Hashing
│ ├── 📂 Week 04 — Problem Solving
│ │ ├── 📄 Recursion & Backtracking
│ │ └── 📄 LeetCode Practice
│ └── 📄 Target: 50–60 Problems
│
├── 📂 MONTH 02 — MERN STACK
│ ├── 📂 Week 05 — Frontend
│ │ ├── 📄 HTML & CSS
│ │ ├── 📄 JavaScript ES6+
│ │ └── 📄 DOM & Async JS
│ ├── 📂 Week 06 — React.js
│ │ ├── 📄 Components & Props
│ │ ├── 📄 Hooks & State
│ │ ├── 📄 React Router
│ │ └── 📄 API Integration
│ ├── 📂 Week 07 — Backend
│ │ ├── 📄 Node.js & Express.js
│ │ ├── 📄 REST APIs
│ │ └── 📄 JWT Authentication
│ ├── 📂 Week 08 — Database
│ │ ├── 📄 MongoDB & Mongoose
│ │ ├── 📄 CRUD & Error Handling
│ │ └── 📄 Full-Stack Project
│ └── 📄 Target: 1–2 Projects
│
├── 📂 MONTH 03 — ADVANCED DSA + SYSTEM DESIGN
│ ├── 📂 Week 09 — Advanced DSA
│ │ ├── 📄 Trees & BST
│ │ ├── 📄 Heaps & Tries
│ │ └── 📄 Greedy Algorithms
│ ├── 📂 Week 10 — Advanced DSA
│ │ ├── 📄 Graphs, BFS & DFS
│ │ └── 📄 Dynamic Programming
│ ├── 📂 Week 11 — HLD Fundamentals
│ │ ├── 📄 Client-Server & HTTP
│ │ ├── 📄 DNS & REST APIs
│ │ ├── 📄 SQL vs NoSQL
│ │ └── 📄 Caching & Load Balancing
│ ├── 📂 Week 12 — System Design
│ │ ├── 📄 Scalability & Availability
│ │ ├── 📄 Sharding & Replication
│ │ ├── 📄 Microservices
│ │ └── 📄 Message Queues
│ └── 📄 Target: 50–60 DSA Problems + Design
│
├── 📂 MONTH 04 — PROJECTS + INTERVIEWS
│ ├── 📂 Week 13 — LLD
│ │ ├── 📄 OOP & SOLID
│ │ ├── 📄 Design Patterns
│ │ ├── 📄 UML Diagrams
│ │ └── 📄 Parking Lot System
│ ├── 📂 Week 14 — HLD
│ │ ├── 📄 URL Shortener
│ │ ├── 📄 Chat Application
│ │ ├── 📄 Notification System
│ │ └── 📄 E-commerce Architecture
│ ├── 📂 Week 15 — MERN Portfolio
│ │ ├── 📄 Production-Style App
│ │ ├── 📄 Authentication & Authorization
│ │ ├── 📄 Deployment
│ │ └── 📄 GitHub Portfolio
│ ├── 📂 Week 16 — Interviews
│ │ ├── 📄 DSA & MERN Revision
│ │ ├── 📄 System Design Mocks
│ │ └── 📄 Resume & Mock Interviews
│ └── 📄 Target: 1 Major Project + Revision
│
├── 📂 AI TOOLS
│ ├── 📄 ChatGPT — Learning & DSA
│ ├── 📄 Claude — Code Review
│ ├── 📄 Gemini — Research
│ ├── 📄 Cursor — AI Coding
│ ├── 📄 Copilot — Code Suggestions
│ └── 📄 NotebookLM — Notes & Revision
│
└── 📂 DAILY ROUTINE
├── 📄 2 Hours — DSA
├── 📄 2 Hours — MERN
├── 📄 1 Hour — System Design
├── 📄 30 Min — AI Learning
└── 📄 30 Min — Revision
🎯 FINAL TARGET
├── 📄 150–180 DSA Problems
├── 📄 Strong MERN Fundamentals
├── 📄 2–3 Full-Stack Projects
├── 📄 LLD & HLD Knowledge
└── 📄 Job-Ready Portfolio
🔥 CONSISTENCY > MOTIVATION
Use AI as your mentor, not a replacement for problem-solving.
🔖 Save this 120-day roadmap!
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Which AI LLM is currently the BEST?
🔹 ChatGPT
🔹 Google Gemini
🔹 Claude
🔹 DeepSeek
🔹 Grok
🔹 Qwen
🔹 Kimi
🔹 GLM
Who is leading the AI race in 2026?
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