Alden Meneses wrote:
> so i have a text file that looks like this
>
> 10/04/2004 UPL TZOO CME CRDN WIBC PETD SMF
> 10/11/2004 UPL TZOO CME WIBC PETD VNBC AMED
>
> anyway each line has 1 date field and 100 stock symbols and they are
> in order. I am trying to compare the different lines to see what has
> changed.
>
From what you have provided, I a assuming the data comes in two line sets and
you want to compare these two line sets and see what has been added and/or deleted
from one run to the next.
I would probably use a hash and add 1 to each element in line 1 or odds and
add 2 for line 2 or evens. Then a quick check using:
1: Deleted from prior run
2: Added since last run
3: same as last run.
Rebuild for set or if you honly have one, then a moot quiestion.
Wags ;)
> so I open the file and put the <FH> into an array
> @array=<FH>;
>
> but $array[0]; = line 1 and $array[1]; = line 2.
>
> i keep thinking that i need to break down the array into each line and
> match a symbol to an array so that $array[0] = 10/04/2004 and
> $array[1] = UPL then compare it to the 2nd line somehow but don't
> think I am thinking this problem out correctly.
>
> can someone help with my logic?
>
> tnx in advance,
> alden
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