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( [id://3333]=superdoc: print w/replies, xml ) Need Help??

Bit late, I'm afraid, but this seems to do what you want:

use strict; use warnings; my @array1 = qw ( ant bee ant cow ant dog ); my @array2 = qw ( ant cat bee cow rat ); my @array3 = qw ( ant 1 3 5 7 9 1 2 3 4 5 6 7 8 9 X ); my @arrays; my $length = 0; for ( \@array1, \@array2, \@array3 ) { $length = @$_ if @$_ > $length; push @arrays, $_; } my %seen; foreach my $i ( 0 .. $length - 1 ) { for ( @arrays ) { print "$_->[$i] " if $_->[$i] and not $seen{$_->[$i]}++; } }

Output:

ant bee cat 1 3 cow 5 rat 7 dog 9 2 4 6 8 X

Maybe there's a way of avoiding two loops, though?

dave

Update: Single loop:

my @arrays = \( @array1, @array2, @array3 ); my %seen; my $i = 0; { my $count = 0; for ( @arrays ) { ++$count and next unless $_->[$i]; print "$_->[$i] " unless $seen{$_->[$i]}++; } $i++; redo unless $count >= @arrays; }

In reply to Re: "Intelligent" array joining by Not_a_Number
in thread "Intelligent" array joining by ngomong

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