I have not solved one of them, unfortunately but I can't help it anyway in such situations. However, the main reason I am writing this is that this interview made me realise that I have to get my skillset straight. Although I have quite often used Python the main outcome for me in this interview made me realise that I need to build up the right amount of confidence in such test situation. Figuring this out helped me a lot and this interview really gave me the impulse to that, ensuring that I know what I am using there, how it can be used and be so knowledgable to know how to tackle new situations P.S.: I have solved the interview questions afterwards offline without external help but really, test situations make unbelievably nervous