java technical test - need to pass - similar to HackerRank - moderate level

I'm looking for a talented Java developer to help ensure I have the necessary code proficiency for my job. The technical test should cover the topics of Core Java, Object-Oriented Programming and Algorithms and Data Structures. Furthermore, I specifically need detailed explanations for each of the answers so I can better understand the underlying concepts behind them. Lastly, I anticipate that this test may require 5 hours of work as there is a lot of material to cover. If this sounds like something you'd be interested in, I'd love for you to apply!