Help Required with Collections

Question

Hi,
I have retrieved a number of records from a database that each contain a "code" and a "value". The code is non-unique, e.g. I have multiple records where the code="A", the code ="B" etc.
What I want is a total of all the values per code, e.g. a total of all the values for code A, total of all thecode B values etc.
I can iterate over my records and add the codes to a Set, which gives me a collection of unique codes. Somehow I need to interate over my original list of records and check the code, then add the value to a total. I guess the psedo-code would look a little like this:
for each record
if code = "A", add the value to A's total
if code = "B", add the value to B's total
etc etc.
Is there way I can make this generic?
Sorry for the newbie question. There must be a fairly straightforward way of doing this but I have no idea what it is :(
Thanks in advance.

Answer 1

This should of have been done in the database code. If this is a homework restriction, you should of change your logic to:
for each record do
    if code exists in the set then
        add value to the accumulator within the set
    else
        put code with value to the setThere's no need to do a two-pass on this.