Perfect Hash Functions?

The only way to have no collisions is to have a 1-to-1 relationship between the key and the hash value. The range of hash values must be at least as large as the number of keys, and the mapping function must transform each key to a unique value. Much more info here: http://en.wikipedia.org/wiki/Perfect_hash.

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.