Other books & blogs

There are tons of books on algorithms. Most of them don’t cover all the topics a well trained competitive programmer should learn, and many do not talk about implementation at all. Here is a personal selection among freely available books.

• Algorithms, by Jeff Erickson
• CP-Algorithms, responsive translations from Russian website e-maxx.ru/algo
• Guide to competitive programming, by Antti Laaksonen
• PEGWiki, the great wiki of the Programming Enrichment Group (Woburn Collegiate Institute, Toronto, Canada)

GitHub repos of codes

• matthewsamuel95/ACM-ICPC-Algorithms (by algorithm then language)
• kvaluruk/Data-Structures-And-Algorithms-… (by language then algorithm)
• ZoranPandovski/al-go-rithms (messy)

Visualisation

• Visualgo by the Halim brothers, Singapore
• The Graph Editor of CS Academy
• See our toolkits featuring GraphViz