2 files changed, 77 insertions, 0 deletions
diff --git a/challenge-194/dave-jacoby/perl/ch-1.pl b/challenge-194/dave-jacoby/perl/ch-1.pl
new file mode 100644
index 0000000000..366233e0a8
--- /dev/null
+++ b/challenge-194/dave-jacoby/perl/ch-1.pl
@@ -0,0 +1,35 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use experimental qw{ fc say postderef signatures state };
+
+my @times = qw{
+    ?5:00
+    ?3:00
+    1?:00
+    2?:00
+    12:?5
+    12:5?
+};
+
+for my $time (@times) {
+    my $output = digital_clock($time);
+    say <<"END";
+    Input:  \$time = '$time'
+    Output: $output
+END
+}
+
+sub digital_clock ( $input ) {
+    my $valid = '';
+    for my $i ( 0 .. 9 ) {
+        my $j = $input;
+        $j =~ s/\?/$i/mx;
+        my ( $h, $m ) = split m{:}, $j;
+        return $valid if $h > 23;
+        return $valid if $m > 59;
+        $valid = $i;
+    }
+    return $valid;
+}
diff --git a/challenge-194/dave-jacoby/perl/ch-2.pl b/challenge-194/dave-jacoby/perl/ch-2.pl
new file mode 100644
index 0000000000..5e59084c61
--- /dev/null
+++ b/challenge-194/dave-jacoby/perl/ch-2.pl
@@ -0,0 +1,42 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use experimental qw{ say postderef signatures state };
+
+my @examples = qw{ abbc xyzyyxz xzxz };
+for my $e (@examples) {
+    my $o = analyze($e);
+    say <<"END";
+    Input:  \$s = '$e'
+    Output: $o
+END
+}
+
+sub analyze( $string ) {
+    my $count  = count_chars($string);
+    my @values = values $count->%*;
+
+    for my $i ( 0 .. -1 + scalar @values ) {
+        my $j     = $values[$i];
+        my @array = @values;
+        $array[$i] = undef;
+        @array = grep { defined } @array;
+        my $c = 0;
+        my $d = scalar @array;
+        for my $v ( @array ) {
+            $c++ if $v + 1 == $j;
+        }
+        return 1 if $c == $d;
+    }
+
+    return 0;
+}
+
+sub count_chars ( $string ) {
+    my $output;
+    for my $i ( 0 .. -1 + length $string ) {
+        $output->{ substr $string, $i, 1 }++;
+    }
+    return $output;
+}