Seriously? What's stopping you making the effort of learning what each line does, and adding comments yourself? Your post history looks like you're asking for people here to deliver something you're being paid to deliver.
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WIth all due respect, marto's response was reasonable and appropriate. I considered adding more comments to the code I posted above, but then I realized that I don't know enough about your level of knowledge to determine what I should add to be most helpful to you.
I also reflected on my own experience learning perl as a new language (way back in 1995). Someone handed me a bunch of perl scripts that were supposed to work together as a pipeline to do some really intricate text processing, and I was supposed to adapt it to handle a larger range of input data. I spent at least half of my time referring back to "perldoc -f ..." to look up the detailed (and quite clear) descriptions of perl functions (in fact, I often ran "perldoc perlfunc" to see them all), as well as "perldoc perlsyn", "perldoc perlre" and so on.
That, along with stepping through in the debugger in order to see what a given function returned for a given input, allowed me to get my task done reasonably well. I highly recommend that approach. (Bear in mind that the code I posted might not do things the way you want them to be done.)
And now that we have Data::Dumper, using the debugger is even better - just add use Data::Dumper 'Dumper'; at the top, and as you step through you can just do p Dumper($some_ref) or p Dumper(\@some_array) and so on, to see what's happening. | [reply]
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I agree with you both. Graff and Marto.
@Marto, please accept my sincere apologize for been rude. It wasn't intentional it's just came out as frastration. I hope you will understand.
As pointed out, I will come back with comments on Graff script (what ever I understood) and if you think/forgive then please do help me to understand if am missedout or misunderstood the logic
Once again, I am really sorry and apologize, feel very ashamed of myself
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