Dude, there is no way someone capable of writing code is also capable of the kind of category error that would make them think there are relevant questions to ask. 

The entire purpose of code is to specify a process so exactly that there is no room for questions.  And you're looking at a thread in which two different people have posted code.  There is no possible question about what the code means that the code itself does not completely and unambiguously answer. 

The algorithm you described either is, or is not, accurately implemented by the code presented.  There are no questions to ask here.  You understand the algorithm because it's your algorithm in the first place.  If the code doesn't implement it correctly, then it's because there is an error in the code or because the description you gave isn't correct, and only you can explain the error or provide the correction.  There are no questions you can ask someone else to address that, because that knowledge is yours alone.  It does not belong to anyone else whom you could ask a question.  If the code does match, then the effect it demonstrates is an effect of the algorithm.  And if that's true, then only you as the developer can decide whether to do anything about it and if so what.  Again, no questions you can ask anyone else are relevant, because it's your decision not anyone else's.   

So I only have one question; why are you pretending to have a problem understanding this?