http://qs1969.pair.com?node_id=361035
Public ScratchpadDownload, Select Code To D/L
If this had been a real emergency.... 
#!/usr/bin/perl
open (X,$0);X([<X>]);sub X{$x=shift;print pack("C*",
map{s|X|**|g;s|x|*|g;eval;}(split(/\|/,join("",
map{s|\#||;eval}(grep/x/,(grep/^\#/,@$x))))));}
#$x="2x37|13x3X2|23x5|29x2X2|2X5|5x13|5x2x11|3x37|29x2X2|13x2X3|101|19
+x3x2";
#$x="|2X5|2X4x5|101|19x3x2|3X3x2X2|2X5|2X3x3X2|97|3X2x11|107|101|19x3x
+2";

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For those of you with old versions of CGI.pm (eg no Vars method) 

use CGI qw(param); 

my %hash= map{my $v=[param($_)];$_,$#$v>0?join
             ("\0",@$v):shift@$v}param();

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Here's a way to break @ary into blocks of size $x; Also check to make sure you don't exceed the array length. 

my $x=50; #blocksize
foreach (my $i=0;$i<=int($#ary/50);$i++) 
{
    my $end = ($x*$i+$x-1>=$#ary?$#ary:($x*$i+$x-1);
    my @keep = @ary[$i*$x..$end]; 
    # Do stuff with @keep
}

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I had to resort an array, like this graphical representation: 

Original

1 2
3 4
5 6
7 8

EG:(1..8)

TO

1 5
2 6
3 7
4 8

EG:(1,5,2,6,3,7,4,8).


my @sorted;
my @array=(0..10);

@first = splice (@array, 0, int(($#array+2)/2));

@sorted=map{(shift @first, shift @array)}(0..$#array);
push (@sorted, shift @first) if ++$#first;

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<code> #!/usr/bin/perl main("quick","brown","fox"); sub main { my $str = "harry.is.brown\n"; my $k=split(/(.)/,$str);#split/./,list context resolves to @_="\n"; print @_; #split /\./,$str; } my $ctr='a'; print $ctr++ . "\n" foreach (1..26); You can also do things like 'aa'..'zz'.