Hashing decisions

I'm reading all this stuff on hashing which I understand the basic concept....but could someone help me (not code) but discern how to decide what parameters to use when ordering the hash.
My assignment basically needs to hash 27 words in a 37 index hash. I'm using the hash function of taking the sum of the int values of the string modulus tablesize or 37.... I'm using simple linear probing to deal with collisions. My issue is how do I order something like that. If I wanted to take the last two digits of the resulting integer from the hash function, i would have to turn it back into a string or actually I wouldn't even have any idea how to do that. Any thoughts (not code) would be appreciated.

Yes, you must cast it first.
For Example:
public void conflict_resolution(int location, Vector lists[], long tmp)
lists[location].add(new Long (tmp));

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