I'm starting to think hackerrank is garbage. All the questions and answers seem to have been written by non english speakers. The "editorial" section which explains the solution is only available after you have found the solution and they're hardly coherent and often not the best answer.
For example the solution to the bribe problem posted by the guy who wrote it was to use some weird bubble sort,
exercism.io seems far superior but the problems aren't hard enough (though maybe more realistic for most job interviews that aren't for google/amazon etc).
Anyone use something other than hackerrank? Ideally like exercism where you can view everyones solutions so you don't have to google the problem and read some indian's programming blog to check if your approach was the best.