array help

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

Replies are listed 'Best First'.
Re: array help by graff (Chancellor) on Dec 14, 2002 at 02:44 UTC
ehdonhon is right -- you're always better off here if you include something you've tried, especially if you tell us what you got from it, so we can see how it differed from what you say you want (this sometimes helps us get a better idea of what you really want). In fact, I'm only guessing now that you might want something like this: `@another_array = map { $_ * $number_from_stdin } @large_array;` [download] or maybe you'd be more comfortable with something less compact: `foreach my $val ( @large_array ) { push @another_array, $val * $number_from_stdin; }` [download] which does the same thing, but may be less mystifying to a larger audience of programmers who may be unfamiliar with Perl. So, have you been reading any relevant books or documentation? You might find that helpful as well...	[reply] [d/l] [select]
Re: array help by ehdonhon (Curate) on Dec 14, 2002 at 02:25 UTC
Hello Anonymous Monk, I think you'll find that generally you will get better answers if you show that you've already done some work on your own. Perhaps you should post what you have already tried? Otherwise, somebody might think that you are just trying to get someone else to figgure out your homework problem for you.	[reply]
Re: array help by dpuu (Chaplain) on Dec 14, 2002 at 00:10 UTC
You question is a little unclear: Do you have one scaling factor, or one per element of the array. I think you are wanting 1 scale facter for the entire array. So you might try: `my @source = (1..10); my $scale = <>; # get user input my @result = map { $_ * $scale } @source; print "original: @source\n"; print "scaled by $scale: @result\n";` [download] --Dave	[reply] [d/l]
Re: array help by batkins (Chaplain) on Dec 14, 2002 at 04:39 UTC
if you want to scale each element: `@result = map { print "Enter scaling factor:"; $_ * int(<STDIN>) } @ar +ray;` [download] if you want to scale the whole thing by one factor: `@result = map { $_ * $factor } @array;` [download]	[reply] [d/l] [select]
Re: array help by Anonymous Monk on Dec 14, 2002 at 01:41 UTC
Here is a nice little one-liner I hack up just for kicks. `perl -e '@nums=(1..100); $user=<>; print "original\n"; foreach ((0+@nu +ms)) { print "@nums";} print "\n\n"; print "scaled: "; foreach my $nu +m (@nums) { print $user*$num . " ";}print "\n";'` [download] Happy Hacking GNU/HDE	[reply] [d/l]


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