I have solved the task (100% successful tests) immediately while skimming over requirements, it was almost trivial (can send screenshot with test output). The code has been written from scratch, in the last ten minutes. I would hand over the code immediately, as soon as I'm awarded the project and the milestone is created (that's what "0 days" in the bid means). Code is guaranteed idiomatic Scala. I'd also add a tiny sbt project with all JUnit test dependencies, if you need that.
Can share screenshot with code samples and 100% successful JUnit tests (in chat; Talk to me, chatting and preview screenshots is free! ;) ).
Good and fast *and* also cheap, because I'm trying to get out of the "new freelancer" list.