Questions posées lors d’un entretien d’embauche pour Software Engineer Java Developer chez CMC Markets

Fairly decent and above-average-industry-difficulty coding exercise which was fun to code, however when your solution doesn't pass, you will just hear "it's not passing our functional tests". So a reply rather than a feedback. Despite your solution correctly compiles, might have clean code, 15+ tests written (with correctly asserted numbers against original description) - you won't hear what was wrong...

Initially they asked to write java program for a requirement (offline, you can take your own time to complete) and face to face. they may ask previous project and given opportunity how can you improve it. end of face to face they make ask you write test