SPJ wrote:
I have a file with the following format:

test1    1.1-1   installed
test1    1.1-1   update
test2    2.1-1   installed
test2    2.1-2   update

I want the file to be formatted in the following way:

test1    1.1-1   1.1-2
test2    2.1-1   2.1-2

Please verify that you made an error about the second version value for "test1": the before (1.1-1) and the after (1.1-2) values do not match.

Also, is it fair to assume the file is guaranteed
to contain even numbers of lines, always with both
an "installed" line and an "update" line, and that
the order is as shown above, etc...  in other words,
how robust does the solution need to be?

(You might also show a little bit of your own attempt,
if nothing else so we don't get the idea this is
homework that we're doing for you. :-) )

-Peter
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