📘 Fellowship-2025 DSA Series

Welcome to the Fellowship-2025 DSA Series, an initiative by Dev Weekends to help learners become confident problem-solvers, build strong foundations in Data Structures and Algorithms (DSA), and crack technical interviews with ease.

🎯 Objective

This repository is not just about solving problems — it’s about:

• Learning how to think like a problem solver
• Understanding core programming principles
• Breaking down problems into patterns and strategies
• Practicing the right amount of questions
• Avoiding burnout from over-solving and under-learning

Whether you're a beginner or someone revisiting DSA for placements, this repo is your structured guide.

🚧 Before You Begin: Pre-Requisites

Before jumping into solving problems, it's crucial to cover the following foundational skills. These are mandatory if you want to truly understand and apply algorithms later:

📌 Programming Language Fundamentals (C++ , Python , Java)

• Variables, Data Types
• Loops & Conditionals
• Functions & Recursion
• I/O Operations
• Understanding References and Pointers

📌 Standard Libraries

• Their Usage and how to identify

📌 Time & Space Complexity

• Big O Notation
• Analyzing loops and recursive calls

📁 All of the above are covered in the Pre-Requisites/ folder. Make sure to go through it first.

💡 Learning Philosophy

This journey is based on smart learning, not brute force. Here's how to approach it:

✅ 1. Don’t Try to Solve Everything

You’re not here to become a Leetcode farmer. You’re here to become a strong problem-solver.

Solve 5–10 solid problems per topic, not 50 repetitive ones. Focus on learning techniques and patterns.

✅ 2. Learn Before You Apply

If a problem involves a new concept (e.g., recursion, hashmaps, DP), go study that first before attempting to solve the problem.

✅ 3. Solve > Struggle

Don’t spend more than 1 hour on any one problem when starting out. If stuck: - Read the editorial - Watch a video - Understand the approach - Retry later

⏱ Ideal Time Per Problem: 30–45 minutes

✅ 4. Backlog Tough Problems

Keep a separate list of problems you couldn't solve. Come back later once you've leveled up.

🧠 Topics Covered (Progressively)

Each level contains its own README.md with topic-wise structure and references.

📂 Folder Structure

Fellowship-2025-DSA-Series/ ├── Pre-Requisites/ # ✅ Start here — Basics of C++, Math, and Complexity │ └── README.md ├── Level 0/ # Arrays, Strings, Recursion.... │ └── README.md ├── Level 1/ # Arrays, Strings, Recursion.... │ └── README.md ├── Common/ # Shared templates, math utils , Templates └── README.md # This file

🧪 How to Practice

1. Read the README in each folder
2. Watch the linked reference video/notes (if provided)
3. Solve the listed problems in order
4. Document key learning in a notebook or markdown
5. Making a notion template will help you a lot
6. Review tricky problems weekly

Code is clean, well-commented, and beginner-friendly.

📢 Special Note

This repo is not meant to be a question dump. Each problem you solve should teach you a pattern. Once you finish this series, you’ll be equipped to tackle:

• Leetcode (Easy–Medium)
• Interview prep rounds (Product & Service companies)

📜 License

📝 Fellowship-2025 DSA Series Licensed under Dev Weekends Fellowship License.

This repository is for personal learning and non-commercial usage only. All rights reserved © 2025 Dev Weekends.

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