You can use regex to extract the data, but I'd reach for something like
Set::IntSpan to handle the intervals.
#!/usr/bin/perl
use warnings;
use strict;
use Set::IntSpan;
my $data = '43:1:1; 43:1:2; 43:1:3; 43:1:4; 43:1:5; 43:1:6; 27:3:7; 27
+:3:8; 27:3:9; 65:1:4; 65:1:18';
my %result;
my $out = sub {
my $key = (keys %result)[0] or return;
print "$key:", delete $result{$key}, ';';
};
while ($data =~ /([0-9]+:[0-9]+):([0-9]+)/g) {
my ($key, $value) = ($1, $2);
if (exists $result{$key}) {
$result{$key}->U($value);
} else {
$out->();
$result{$key} = 'Set::IntSpan'->new($value);
}
}
$out->();
Output:
43:1:1-6;27:3:7-9;65:1:4,18;
map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]
