✅ Complete Coding Interview Roadmap – What You MUST Know 👨‍💻💼

Whether you're preparing for FAANG or startups, here's everything you need to crack coding interviews in 2025:

🔰 1. Programming Language Mastery
Choose one (C++, Java, Python) & master:
- Syntax & built-in functions
- Time & space complexity
- Object-oriented programming
- Recursion, Iterative logic

📚 2. Data Structures
Understand how they work + when to use them:
- Arrays & Strings
- Linked Lists (Singly, Doubly)
- Stacks & Queues
- Hash Maps / Hash Tables
- Trees (Binary, BST, Trie)
- Graphs (Adjacency List/Matrix)
- Heaps & Priority Queues

⚙️ 3. Algorithms
Key to solving problems efficiently:
- Sorting & Searching (Binary Search, Merge/Quick Sort)
- Recursion & Backtracking
- Sliding Window, Two Pointers
- Greedy & Divide and Conquer
- Dynamic Programming (0/1 Knapsack, LIS, etc.)
- Graph Algorithms (DFS, BFS, Dijkstra’s, Topological Sort)
- Bit Manipulation

💬 4. Problem Solving Practice
Use platforms like:
- LeetCode (Top 150/Blind 75)
- HackerRank / Codeforces
- InterviewBit / GFG

💡 5. System Design (For 3+ years experience)
- High-level design (scalability, availability, latency)
- Components: Load Balancer, Database, Caching, Message Queues
- Design examples: URL Shortener, Instagram, Chat App
- Use tools like draw.io or Excalidraw to visualize designs

🧠 6. Behavioral + HR Round Prep
Prepare STAR-based answers for:
- "Tell me about yourself"
- "Biggest challenge you faced"
- "Why do you want to join us?"
- "Teamwork, leadership, conflict"

📝 7. Resume & Portfolio
- Keep it ONE page
- Highlight impact, not tasks
- Add GitHub, LinkedIn, Portfolio links
- Projects that use real-world APIs or solve real problems

🔄 8. Mock Interviews & Feedback
- Practice with peers, mentors or platforms like Pramp / Interviewing.io
- Get feedback on approach, not just correctness

🎯 Tips:
- Stay consistent (1–2 hours daily)
- Focus on patterns, not just solutions
- Keep track of mistakes & revise weekly
- Rest before interviews – don’t cram

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