🛤️ 90 Days of DSA Roadmap

Day 1 & 2: Understanding Space and Time Complexity

The foundation of efficient programming is understanding the complexity of your code.

📚 Resources:

• Theory - GeeksforGeeks
• Video Lecture - Kunal Kushwaha

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Day 3 to 10: Recursion and Backtracking

Master these essential concepts to unlock more advanced problem-solving techniques.

📚 Resources:

• Theory - GeeksforGeeks
• Video Lecture - Kunal Kushwaha

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Day 11 to 30: Basic Data Structures: Arrays, Linked Lists, Stacks, and Queues

📚 Resources:

Arrays:

• Theory - GeeksforGeeks
• Video Lecture - Kunal Kushwaha

Linked List:

• Theory - TutorialsPoint
• Video Lecture - Love Babbar

Stacks and Queues:

• Theory - Andrew Edu
• Video Lecture - Kunal Kushwaha

💡 Nishant Chahar's advice: Start participating in contests and learn new concepts along the way. You may not do well initially, but keep learning and growing!

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Day 31 to 45: Advanced Data Structures and Algorithms

📚 Topics:

• Searching
• Sorting (Bubble, Insertion, Selection, Merge, Quick)
• Hashmaps
• Trees
• Heaps
• Sliding Window

📚 Resources:

Searching:

• Theory - GeeksforGeeks
• Video Lecture - CodeHelp by Babbar

Sorting:

• Theory - GeeksforGeeks
• Video Lecture - CodeHelp by Babbar

Hashmaps:

• Theory - GeeksforGeeks
• Video Lecture - CodeHelp by Babbar

Trees:

• Theory - GeeksforGeeks
• Video Lecture - CodeHelp by Babbar

Heaps:

• Theory - GeeksforGeeks
• Video Lecture - Aditya Verma

Sliding Window:

• Theory - GeeksforGeeks
• Video Lecture - Aditya Verma

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Day 46 to 70: Dynamic Programming and Graphs

📚 Topics:

• Graph Algorithms: BFS, DFS, Dijkstra, Floyd Warshall, Prim's, Kruskal's, Kosaraju’s, Topological Sort, DSU
• Dynamic Programming

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Day 71 to 80: Object-Oriented Programming (OOPs)

Surprise topic — stay tuned!

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Day 80 to 90: Additional Advanced Topics

📚 Topics:

• Number Theory
• Bit Manipulation
• Tries

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