Welcome to Coding-Birdies, your ultimate destination for mastering Data Structures and Algorithms (DSA) and acing your technical interviews! 🚀💜 Whether you're preparing for a big tech interview or just sharpening your DSA skills, this repo is designed to help you grow, learn, and succeed.
Coding-Birdies isn’t just another DSA repo. It’s a collaborative effort by Madhu and Mugdha, two passionate DSA enthusiasts, working together to create a robust, fun, and engaging environment for all learners. This repo contains handpicked, frequently asked interview questions, with solutions in both C++ and Python.
- 💡 Interactive Learning: Step-by-step explanations to make you understand the algorithms.
- 📝 Dual Language Support: Solutions in both C++ and Python to cater to a wide range of preferences.
- 📈 Interview Ready: Prepare for interviews with real-life problem-solving strategies and tips.
- Over 100+ DSA Questions ranging from basic concepts like arrays and linked lists to advanced topics like graphs, dynamic programming, and backtracking.
- Two Language Support: C++ and Python solutions for each problem.
- Folder-wise Structure: Organized by topics, so you can easily jump to what interests you most.
- 🧮 Arrays
- 🔗 Linked Lists
- 🏗️ Stacks & Queues
- 🌳 Trees & Binary Search Trees
- 🌍 Graphs
- 🗺️ Hash Maps
- 🔥 Heaps
- 🔍 Searching (Binary Search, Linear Search)
- 🔄 Sorting (Quick Sort, Merge Sort, etc.)
- 🧩 Dynamic Programming (Knapsack, Longest Common Subsequence)
- ♻️ Backtracking (Sudoku Solver, N-Queens)
- 🏃 Greedy Algorithms
- ✂️ Divide and Conquer
- 💻 Must-do questions from top tech companies (Google, Amazon, Microsoft, etc.)
- 🧠 Problem-solving strategies and frameworks.
- 📊 Approach tips: How to structure your thoughts for a coding interview.
⭐ Collaborative Effort: Madhu and Mugdha are dedicated to building a community-driven repo where you can learn, contribute, and thrive.
⭐ Learning by Doing: Practical coding challenges after each explanation ensure you practice what you've learned.
⭐ Interview-Ready: Be prepared for any coding interview with hands-on practice and real-time interview problems.
⭐ All Levels Welcome: Whether you're a beginner or a seasoned coder, this repo is for everyone.
⭐ Future-Proof: Regular updates, new questions, and cutting-edge strategies keep you ahead of the curve.
- Madhu: Passionate about algorithm design, tackling complex problems, and creating elegant solutions.
- Mugdha: Experienced DSA coach with a talent for breaking down tricky concepts into simple, digestible steps.
🛠️ All code is under development, and we’re actively adding more problems, solutions, and features to make the repo even better! If you're looking to contribute, check out the folders below and feel free to help us grow this amazing learning resource.
Folder Structure:
Arrays/: All questions related to arrays.LinkedLists/: Solutions and problems related to linked lists.DynamicProgramming/: DP challenges to practice.Graphs/: Graph algorithms and problems.Trees/: Problems related to trees and binary search trees.Backtracking/: Classic backtracking problems like N-Queens and Sudoku Solver.
📝 Note: We are constantly working on adding new solutions, so feel free to contribute and make it even better!
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Clone the Repository:
git clone https://github.com/username/Coding-Birdies.git
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Explore the Topics:
- Go through the questions folder by folder (e.g.,
Arrays/,Trees/,DynamicProgramming/).
- Go through the questions folder by folder (e.g.,
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Pick a Question:
- Dive into any topic, read the problem, and explore the provided solutions in Python or C++.
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Understand the Approach:
- Don’t just copy-paste! Make sure to understand the underlying concept and the steps involved in the solution.
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Solve It Yourself:
- Try solving the problem before checking the solution. This will solidify your understanding and help you improve.
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Run the Code:
- Test your solution with various edge cases to ensure your code is efficient and correct.
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Array:
- Find the missing number in an array of 1 to N
- Find the majority element (Boyer-Moore Voting Algorithm)
- Maximum Subarray Sum (Kadane’s Algorithm)
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Linked Lists:
- Reverse a Linked List (Iterative and Recursive approaches)
- Detect Loop in Linked List (Floyd’s Cycle Detection)
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Trees:
- Inorder, Preorder, and Postorder Traversals (Recursive and Iterative)
- Diameter of a Binary Tree
- Lowest Common Ancestor (LCA)
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Dynamic Programming:
- Longest Common Subsequence (LCS)
- 0/1 Knapsack Problem
- Coin Change Problem
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Graphs:
- BFS and DFS Traversals
- Dijkstra’s Shortest Path Algorithm
- Topological Sorting
- Contribute: Got a favorite problem or algorithm you want to add? We’re open to pull requests! Submit a PR and we’ll review it.
- Report Issues: Found a bug or mistake? Let us know by opening an issue!
- Suggest a Feature: Want to see a new topic or problem added? Feel free to suggest it!
Get involved, share your experiences, and connect with fellow coders. Whether you're a beginner or a seasoned pro, together we can master DSA and nail your interviews!
Happy Coding! ✨💜
- Purple Theme: Purple emojis, icons, and keywords to create a vibrant and engaging experience.
- Development Phase Mention: Clear mention that the repo is still under development.
- Encouragement to Contribute: Actively inviting others to contribute to the repository, making it a community-driven project.
- Fun and Engaging Tone: Making the repository interesting with emojis and exciting language.
- Copy the above Markdown content.
- Go to your GitHub repository.
- Open the
README.mdfile (or create a new one if it doesn't exist). - Paste the copied content into the file.
- Commit the changes.
Now your Coding-Birdies GitHub repository will have a purple-themed, engaging, and community-friendly README that will attract contributors and make learning DSA fun! 💜