1st question was a simple algorithm that you need to chunk an array and return some values from chunks. That was an easy go. 2nd question was a moderate SQL question where you need to use an inner query and racking. To provide max order amount for a time frame where you need to query time frame from initial data set. 3rd question was having a GitHub repo where you need to build an Angular application to filter out a country list by an input on a search bar. The only tricky part is search bar and list of countries are separate components. 4th question was building an entire Spring application where you use H2 as an in-memory DB, and you need to form a trading API. Requirements are quite easy with Spring JPA however they were tricky so you need to be careful about their requirement set. Probably they measure if you can read and understand. 5th question was C++ and it was optional. I even don't read it.
