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#!/usr/bin/perl
use Modern::Perl;
# A script that can wrap the given paragraph at a specified column using the greedy algorithm
my ($max_col,$text) = @ARGV;
$max_col ||= 45;
$text ||= "Hello world, it's a very nice day! The sun is shining. Rainbows and Unicorns!";
my @word = split(/ /,$text);
my %word = map { $_ => length($_) } @word;
my $line = "";
my $c = 0;
foreach my $w (@word) {
if (($c + $word{$w}) <= $max_col) {
$c += $word{$w}+1;
$line .= "$w ";
} else {
say $line;
$line = "$w ";
$c = $word{$w};
}
}
say $line if ($line);
__END__
./ch2.pl 15 "Hello world, it's a very nice day! The sun is shining. Rainbows and Unicorns!"
Hello world,
it's a very nice
day! The sun is
shining.
Rainbows and
Unicorns!
./ch2.pl 45 "Hello world, it's a very nice day! The sun is shining. Rainbows and Unicorns!"
Hello world, it's a very nice day! The sun is
shining. Rainbows and Unicorns!
./ch2.pl 75 "Hello world, it's a very nice day! The sun is shining. Rainbows and Unicorns!"
Hello world, it's a very nice day! The sun is shining. Rainbows and
Unicorns!
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