We are continuing our Domain-Driven Design related chapters, and here I’ve tried to describe my understadings regarding to Repositories in the DDD. Repositories are easily confused with Factory patterns, while the main difference is that Factory Pattern does not provide persistency. Lets just dive into repository topic which starts with retrieving objects.

What is Aggregate ?

Original definition of the problem is given at projecteuler.net, as always hackerrank definition of the problem is more complicated an challenging.