🧠 JavaScript Data Structures & Algorithms (DSA) Mastery

Welcome to your DSA journey with JavaScript! This roadmap is designed to build strong problem-solving skills, improve algorithmic thinking, and prepare you for technical interviews.

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📌 Goals

• Master core data structures and algorithms using JavaScript
• Build strong intuition for optimizing time and space complexity
• Solve real-world coding problems and crack interviews with confidence

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🧭 Roadmap

✅ Phase 1: Foundations - Time & Space Complexity

• [✅] Big O Notation (Time & Space)
• [✅] Common Complexities (O(1), O(n), O(log n), etc.)
• [✅] Analyzing Loops and Nested Structures
• [✅] Memory Usage

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🔢 Phase 2: Core Data Structures

📦 Linear Structures

• [✅] Arrays
• [✅] Strings
• [✅] Stacks
• Queues

🔗 Linked Structures

• Singly Linked Lists
• Doubly Linked Lists

🌲 Hierarchical Structures

• Trees (Binary Tree, BST)
• Heaps (Min/Max)
• Tries

🌐 Non-Linear Structures

• Graphs (Adjacency List, Matrix)
• Sets and Maps (Hash Tables)

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🔄 Phase 3: Algorithms

🔁 Core Concepts

• Recursion
• Iteration vs Recursion
• Backtracking

🔍 Searching

• Linear Search
• Binary Search
• BFS & DFS (Trees & Graphs)

🔃 Sorting

• Bubble Sort
• Selection Sort
• Insertion Sort
• Merge Sort
• Quick Sort

📐 Advanced Techniques

• Two-Pointer Pattern
• Sliding Window
• Divide & Conquer
• Greedy Algorithms
• Dynamic Programming (Memoization & Tabulation)

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🧩 Phase 4: Practice Problems & Interview Prep

• Easy: 30–40 LeetCode-style problems
• Medium: 40–50 real-world problems
• Hard: 20+ advanced problems
• Mock Interview Rounds

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🧰 Tools & Resources

• Editor: VS Code or LeetCode Playground
• Track Progress: GitHub, Notion, or this README
• Practice Sites: LeetCode, HackerRank, CodeSignal
• Visual Tools: visualgo.net, bigocheatsheet.com

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📈 Progress Tracker

Phase	Topic	Status
1	Time & Space Complexity	✅Completed
2	Arrays	⬜ Not Started
2	Strings	⬜ Not Started
3	Sorting Algorithms	⬜ Not Started
3	Recursion	⬜ Not Started
4	Mock Interviews	⬜ Not Started

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“Data Structures + Algorithms = Programs.” – Niklaus Wirth