Whether you're just starting out as a coder or want to advance your coding ... Online Judge, or SPOJ, trains users to code and build efficient algorithms through more than 20,000 practice problems.

because his Fremont high school didn’t teach coding, he developed his own online course and shepherded classmates through it. As a junior, he distilled those lessons into a 450-page test-prep ...

Triplebyte — which offers personalised online coding tests (the tests ask questions based on how well you answered previous problems) and subsequent technical interviews to help screen ...

there are online assignments, and practice sets that will put your knowledge to test. Visit Khan Academy without a second thought, to pursue one of the best coding courses available online.