This doesn't allow for duplicate values in the array, the
hash value will get changed to the highest number matched.
See my earlier post for a version that allows for duplicates.
I am also not sure if the fact duplicates aren't handled are
a concern to the original poster, I just know I have been
bitten by this before. :^)
Sorry I didn't take the time to see if your code be modified
to allow for dups.