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https://github.com/rlee0525/TechnicalConceptsForInterviews

Various technical concepts for interviews - Feel free to contribute and make it better!
https://github.com/rlee0525/TechnicalConceptsForInterviews

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Various technical concepts for interviews - Feel free to contribute and make it better!

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README 

        
# Technical Concepts For Interviews



> Study guide to prepare for technical interviews. Feel free to contribute and help improve the repo!



### [Angular vs. React](/AngularVReact.md)

- Overview



### [Architecture Crash Course](/Architecture.md) :star:

- High level overview of architecture questions / concepts



### [Choosing Database (RDBMS vs. NOSQL)](/ChoosingDB.md) :star:

- RDBMS vs. NoSQL

- Row store vs. Column store

- Hadoop vs. NoSQL

- Common types of NoSQL



### [Frontend Questions - The Basics](/FrontendBasics.md)

- Basic frontend terms and concepts



### [Frontend Questions - HTML/CSS](/HTML_CSS.md)

- HTML and CSS specific frontend interview questions



### [Hash Table Collision Resolution](/HashTableCollisionResolution.md)

- What is a hash table?

- What are hash collisions?

- Open Addressing 

- Linear and Quadratic Probing

- Separate Chaining

– Robin Hood Hashing

– Cuckoo Hashing



### [What is HTTP?](/HTTP.md)

- HTTP headers

- Request methods

- Cookies



### [JavaScript](/JavaScriptNode.md)

- JavaScript: Basics and Tricky Questions

- Node / Express / Readline / FS / Stream / etc.



### [Object-Oriented Programming Basics](/OOP_Basics.md)

- What is OOP?

- Why OOP?

- Key Concepts



### [Pointers, Malloc, Threads](/Memory.md)

- Pointers

- Memory Allocation

- Mutex vs. Semaphore

- Thread locking



### [Sorting Algorithms](/Sorting.md)

- High-level thoughts

- Bubble sort

- Selection sort vs. Insertion sort

- Quick sort

- Merge sort

- Heap sort

- Bucket sort

- Radix sort

- Why is Quicksort preferred?



### [System Design and Scalability](/SystemDesign.md)

- More basic concepts before reading the architecture section

- Example questions



### [System Design Interview Examples](/SystemDesignInterviewExamples.md)

- Twitter

- Instagram



### [System Summary](/SystemSummary.md)

- CheatSheet - System Design



### [URL Shortner](/URLShortner.md)

- How would you design a URL Shortner?



### [Navigating To A URL](/VisitingURL.md) :star:

- What really happens when you navigate to a URL



### [Web Crawler](/WebCrawler.md)

- What is a web crawler?

- How does it work?



### [Website Performance](/WebsitePerformance.md)

- Speeding up your website



### [WebSocket](/WebSocket.md)

- What is WebSocket?

- Contrast to other alternatives

- Resources



### [Web Systems Basics](/WebSystemsBasics.md) :star:

- HTTP vs. HTTPS

- XSS vs. CSRF

- Web server vs. Application server

- Cookie / SessionStorage / LocalStorage

- Cookies vs. Tokens



# More Topics...

**Feel free to work on any of these and make a pull request!**

- API Design and Webhooks

- Topological Sort, Dijkstra's Algorithm, Priority Queue

- Rabin-Karp Substring Search

- AVL Trees / Self-balancing BST

- Red-Black Trees

- MapReduce

- Bellman-Ford Algorithm

- Floyd-Warshall Algorithm

- Minimum Spanning Trees



# How To Contribute



To fix a bug or create a feature, follow these steps:



1. Fork the repo

2. Create a new branch (`git checkout -b awesome-feature`)

3. Make changes or add new changes.

5. Commit your changes (`git add -A; git commit -m 'Awesome new feature'`)

6. Push to the branch (`git push origin awesome-feature`)

7. Create a Pull Request!



Please click [here](https://github.com/rlee0525/TechnicalConceptsForInterviews/issues/new) to report an issue or request a new feature.



... or simply star the repo!



## Contributors

- [Daniel Chang](https://github.com/DanielLChang)

- [David Hu](https://github.com/davidhu2000)

- [Michael Mach](https://github.com/mike591)

- [Randy Jap](https://github.com/randyjap)

- [Tai Chung](https://github.com/tchung1118)

- [Torah Oglander](https://github.com/MixMasterT)

- [Will Ashley](https://github.com/willashley23)