[adetrest]

The kind of "tests" that most interviews use (and leetcode etc) are more riddles than anything else. Either you know the answer already and are able to recall it and pass the interview, or you don't know the answer and you'll fall flat on your face.

Hopefully, the job they are hiring for isn't "master code riddle solver", making the whole process irrelevant whether you're junior or senior. In any case, the interview checks whether you know this problem and its solution or not. That's not a junior/senior distinction.