Hackerrank is terrible as well. The questions are worded in a way that takes ages to think about unless you are a mathematician. The time limit is pointless.It

Hackerrank is terrible as well. The questions are worded in a way that takes ages to think about unless you are a mathematician. The time limit is pointless.It doesn't tell you why things are failing. For the type of problems it gives you a debugger would be really useful but you are coding in a web browser.