#!usr/bin/perl
use strict;
use warnings;

my @steps_name = ("1-2 Steps", "5-7 Steps", "8-10 Steps", "11-15 Steps");

foreach my $element (@steps_name) {
        print "Matched with ".$element."\n" if ($element =~ /[0-9]-[0-9]/);
}

__END__

$ perl test.pl
Matched with 1-2 Steps
Matched with 5-7 Steps
Matched with 8-10 Steps
Matched with 11-15 Steps