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🧠 Mastering Data Structures & Algorithms in JavaScript A structured and hands-on guide to learning DSA using JavaScript β€” complete with explanations, visual aids, quizzes, and coding challenges. Ideal for interview prep, competitive coding, and leveling up problem-solving skills.

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Khan4218/Data-Structures-and-Algorithm-JS

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🧠 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.


πŸ“Œ 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

🧭 Roadmap

βœ… Phase 1: Foundations - Time & Space Complexity

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

πŸ”’ Phase 2: Core Data Structures

πŸ“¦ Linear Structures

  • [βœ…] Arrays
  • [βœ…] Strings
  • [βœ…] Stacks
  • Queues

πŸ”— 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)

πŸ”„ Phase 3: Algorithms

πŸ” Core Concepts

  • Recursion
  • Iteration vs Recursion
  • Backtracking

πŸ” Searching

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

πŸ”ƒ Sorting

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

πŸ“ Advanced Techniques

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

🧩 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

🧰 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

πŸ“ˆ Progress Tracker

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

"Data Structures + Algorithms = Programs." – Niklaus Wirth

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🧠 Mastering Data Structures & Algorithms in JavaScript A structured and hands-on guide to learning DSA using JavaScript β€” complete with explanations, visual aids, quizzes, and coding challenges. Ideal for interview prep, competitive coding, and leveling up problem-solving skills.

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