Coding Interview Resources – Telegram
Coding Interview Resources
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This channel contains the free resources and solution of coding problems which are usually asked in the interviews.

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1️⃣ 📘 JavaScript Algorithms
github.com/trekhleb/javanoscript-algorithms
– 100+ algorithms & data structures in JS with explanations
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github.com/donnemartin/system-design-primer
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4️⃣ 📒 Awesome Python
github.com/vinta/awesome-python
– Curated list of Python libraries, tools, and resources
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5️⃣ 📕 Frontend Developer Roadmap
github.com/EnoahNetz/Frontend-Developer-Interview-Preparation
– Full frontend prep with HTML, CSS, JS, React
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6️⃣ 📓 Developer Roadmap
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💻 Popular Coding Languages & Their Uses 🚀

There are many programming languages, each serving different purposes. Here are some key ones you should know:

🔹 1. Python – Beginner-friendly, versatile, and widely used in data science, AI, web development, and automation.

🔹 2. JavaScript – Essential for frontend and backend web development, powering interactive websites and applications.

🔹 3. Java – Used for enterprise applications, Android development, and large-scale systems due to its stability.

🔹 4. C++ – High-performance language ideal for game development, operating systems, and embedded systems.

🔹 5. C# – Commonly used in game development (Unity), Windows applications, and enterprise software.

🔹 6. Swift – The go-to language for iOS and macOS development, known for its efficiency.

🔹 7. Go (Golang) – Designed for high-performance applications, cloud computing, and network programming.

🔹 8. Rust – Focuses on memory safety and performance, making it great for system-level programming.

🔹 9. SQL – Essential for database management, allowing efficient data retrieval and manipulation.

🔹 10. Kotlin – Popular for Android app development, offering modern features compared to Java.

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Which data structure uses LIFO (Last In First Out)?
Anonymous Quiz
22%
A) Queue
69%
B) Stack
4%
C) Array
4%
D) Linked List
2
What is the time complexity of binary search?
Anonymous Quiz
27%
A) O(n)
58%
B) O(log n)
14%
C) O(n²)
1%
D) O(1)
2
Which traversal technique gives sorted output in a Binary Search Tree (BST)?
Anonymous Quiz
26%
A) Preorder
19%
B) Postorder
45%
C) Inorder
9%
D) Level Order
Which data structure is best for implementing recursion?
Anonymous Quiz
9%
A) Queue
19%
B) Heap
52%
C) Stack
20%
D) Tree
Which data structure uses FIFO (First In First Out)?
Anonymous Quiz
18%
A) Stack
80%
B) Queue
2%
C) Tree
0%
D) Graph
1
Which searching algorithm works only on sorted data?
Anonymous Quiz
25%
A) Linear Search
66%
B) Binary Search
7%
C) Depth First Search
2%
D) Breadth First Search
1
Which data structure is used in Breadth First Search (BFS)?
Anonymous Quiz
20%
A) Stack
39%
B) Queue
7%
C) Array
34%
D) Tree
1
1
Which data structure represents hierarchical relationships?
Anonymous Quiz
7%
A) Array
8%
B) Stack
6%
C) Queue
79%
D) Tree
1
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Essential Tools & Programming Languages for Software Developers

👉 Integrated Development Environments (IDEs):
- Visual Studio Code: A lightweight but powerful source code editor that supports various programming languages and extensions.
- IntelliJ IDEA: A popular IDE for Java development, also supporting other languages through plugins.
- Eclipse: Another widely used IDE for Java, with extensive plugin support for other languages.

👉 Version Control Systems:
- Git: A distributed version control system that allows developers to track changes in their codebase, collaborate with others, and manage project history. GitHub, GitLab, and Bitbucket are popular platforms that use Git.

👉 Programming Languages:
- JavaScript: Essential for web development, with frameworks like React, Angular, and Vue.js for front-end development and Node.js for server-side programming.
- Python: Known for its simplicity and versatility, used in web development (Django, Flask), data science (NumPy, Pandas), and automation.
- Java: Widely used for building enterprise-scale applications, Android app development, and backend systems.
- C#: A language developed by Microsoft, primarily used for building Windows applications and games using the Unity engine.
- C++: Known for its performance, used in system/software development, game development, and applications requiring real-time processing.
- Ruby: Known for its simplicity and productivity, often used in web development with the Ruby on Rails framework.

👉 Web Development Frameworks:
- React: A JavaScript library for building user interfaces, particularly single-page applications.
- Angular: A TypeScript-based framework for building dynamic web applications.
- Django: A high-level Python web framework that encourages rapid development and clean, pragmatic design.
- Spring: A comprehensive framework for Java that provides infrastructure support for developing Java applications.

👉 Database Management Systems:
- MySQL: An open-source relational database management system.
- PostgreSQL: An open-source object-relational database system with a strong emphasis on extensibility and standards compliance.
- MongoDB: A NoSQL database that uses a flexible, JSON-like format for storing data.

👉 Containerization and Orchestration:
- Docker: A platform that allows developers to package applications into containers, ensuring consistency across multiple environments.
- Kubernetes: An open-source system for automating deployment, scaling, and management of containerized applications.

👉 Cloud Platforms:
- Amazon Web Services (AWS): A comprehensive cloud platform offering a wide range of services, including computing power, storage, and databases.
- Microsoft Azure: A cloud computing service created by Microsoft for building, testing, deploying, and managing applications.
- Google Cloud Platform (GCP): A suite of cloud computing services provided by Google.

👉 CI/CD Tools:
- Jenkins: An open-source automation server that helps automate the parts of software development related to building, testing, and deploying.
- Travis CI: A continuous integration service used to build and test software projects hosted on GitHub.

👉 Project Management and Collaboration:
- Jira: A tool developed by Atlassian for bug tracking, issue tracking, and project management.
- Trello: A visual tool for organizing tasks and projects into boards.

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