🚀 Java DSA Mastery — FAANG Preparation

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🔥 Why this repository?

✔️ Structured DSA learning path

✔️ Company-wise questions (Amazon, Google, Meta…)

✔️ SDE Sheets (TUF, CodeHelp, Apna College)

✔️ Topic-wise notes + patterns

✔️ Clean folder READMEs (templates included)

✔️ Eye-catchy design for GitHub visitors

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📂 Folder Structure (Aesthetic + Emoji-Friendly)

📦 Java-DSA-Mastery
├── 🔢 Arrays/
├── 🧵 Strings/
├── 🔁 Two Pointer & Sliding Window/
├── 🔍 Binary Search/
├── 🔀 Sorting/
├── 🔧 Bit Manipulation/
├── 📚 Collection Framework/
├── ➗ Maths For DSA/
├── ♻️ Recursion/
├── 🧠 Recursion-Advanced/           
├── 🔙 Backtracking/
├── 🔗 Linked List/
├── 🧰 Stack/
├── 🛤 Queue/
├── 🌲 Trees/
├── 🌳 Trees-Advanced/               
├── 🔡 Tries/
├── 🔼 Heap & Priority Queue/        
├── ♟️ Greedy/
├── 🧭 Graph/
├── ⛓️ Hashing/
├── 🧩 Dynamic Programming/
├── 📝 SDE-Sheet/
│   ├── Apna College/
│   ├── CodeHelp/
│   └── Take U Forward/
├── 🧪 Interview/
│   ├── Amazon/
│   ├── Microsoft/
│   ├── Google/
│   ├── Meta-Facebook/
│   ├── Netflix/
│   ├── Uber/
│   ├── Adobe/
│   ├── LinkedIn/
│   ├── Oracle/
│   ├── Salesforce/
│   ├── Atlassian/
│   ├── Accenture/
│   ├── Postman/
│   └── Figma/

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🔵 Core Topics

🟣 Data Structures

🟠 Algorithms

🟤 Java Essentials

🔥 Interview Preparation

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🧭 DSA Roadmap (Mermaid Diagram — GitHub Supports It)

flowchart TD
  A[Java & OOP] --> B[Maths for DSA]
  B --> C[Arrays]
  C --> D[Strings]
  D --> E[Searching & Sorting]
  E --> F[Two Pointers & Sliding Window]
  F --> G[Hashing]
  G --> H[Recursion]
  H --> I[Backtracking]
  I --> J[LinkedList]
  J --> K[Stack & Queue]
  K --> L[Trees]
  L --> M[Advanced Trees]
  M --> N[Heap & PriorityQueue]
  N --> O[Greedy]
  O --> P[Graphs]
  P --> Q[Dynamic Programming]
  Q --> R[Tries & Bit Manipulation]
  R --> S[SDE Sheets + Interviews]

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📐 Coding Standards (Short, Sharp, Professional)

• Class names → PascalCase
• Methods & variables → camelCase
• Only 1 problem per file
• Add Time & Space Complexity at the top
• No boilerplate spam (clean code > competitive template)
• Use meaningful variable names: left, right, freq, visited, etc.

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📜 License

Licensed under Apache 2.0.

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