Coding Interview Prep and Practice Websites

• CodeBurst 

• CodeSignal 

• AlgoExpert

• HackerRank 

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Where to code for free

• Replit - supports over 50 languages 

• Google Colaboratory - built on top of Jupyter Notebook working with Python

• p5.js - JavaScript

• Open Processing - graphics library based on Java

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Where to download programs to your computer​

• Python

• Java

• Processing