23 lines
421 B
Perl
23 lines
421 B
Perl
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use 5.20.0;
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use warnings;
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use Path::Tiny;
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use experimental qw/
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signatures
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postderef
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/;
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my @lines = path(shift)->lines;
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print scalar grep { is_valid($_) } @lines;
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sub is_valid($line) {
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$line =~ /(?<min>\d+)-(?<max>\d+) (?<letter>\w): (?<password>\w+)/;
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my $min = $+{min};
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my $max = $+{max};
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my @matches = $+{password} =~ /$+{letter}/g;
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return ( @matches >= $min and @matches <= $max );
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}
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