How stupid it is to use an integer value a key for an Hash Table?

It's not stupid, it is perfectly sensible. An integer is a natural seed in a unique naming scheme. Allthough the relational zealot in me dies a little when I say things like this =D.

It is fine unless there's a high chance that your integer keys are 62, 93, 124, ... and your hash table size happens to be 31.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.