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Coding Challenges
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Exercism
HPC University: Challenge of the Week Archive
mlcomp.org
TunedIT - Data mining & machine learning data sets, algorithms, challenges
beatmycode.com
FightCode - Killing Robots for Fun
CodeAbbey - programming problems to practice and learn for beginners
CodeKata
Kattis
SQL exercises
CrowdANALYTIX - AI, Uncomplicated.
ROSALIND | Problems | Locations
LintCode - Home
The Python Challenge
Online Courses - Anytime, Anywhere | Udemy | Udemy
CheckiO - coding games and programming challenges for beginner and advanced
Coding Tests and Assessments for Technical Hiring | CodeSignal
Online Judge - Home
Assessments | HireVue
Coderbyte | The #1 Coding Assessment Platform
Coding Games and Programming Challenges to Code Better
Tech Recruiting Platform, Online Code Testing | Codility
Train with Programming Challenges/Kata | Codewars
CodingBat Java
About - Project Euler
Sphere Online Judge (SPOJ)
Brilliant | Math and science done right
Codeforces
Devpost - The home for hackathons
Kaggle: Your Home for Data Science
Design & Build High-Quality Software with Crowdsourcing | Topcoder
LeetCode - The World's Leading Online Programming Learning Platform
HackerEarth | Hackathons, Innovation Management, and Technical Recruitment software
Programming Competition,Programming Contest,Online Computer Programming
HackerRank
Data Structures and Algorithms Problems - Techie Delight
The Cryptopals Crypto Challenges
Category:C - Rosetta Code
Edabit // Learn to Code with 3,500+ Interactive Challenges
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