hash table with negative number

[LarryChen]

Can you use hash function without using any of STL? I repeat my original quesiton. There is an array, int a[] = {3, -1, 5, 7, -6}. How'd I build a hash table based on this array without using any of STL? Thanks.

An array, who's data type is a list:

std::vector <std::list<foo> >

Viggy