DAJ 282

2 files changed, 67 insertions, 0 deletions

diff --git a/challenge-282/dave-jacoby/perl/ch-1.pl b/challenge-282/dave-jacoby/perl/ch-1.pl
new file mode 100644
index 0000000000..663a970d17
--- /dev/null
+++ b/challenge-282/dave-jacoby/perl/ch-1.pl
@@ -0,0 +1,38 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use experimental qw{ postderef say signatures state };
+
+use List::Util qw{ uniq };
+
+my @examples = ( 12344456, 1233334, 10020003 );
+
+for my $example (@examples) {
+    my $output = good_integer($example);
+    say <<"END";
+    Input:  \@int = $example
+    Output: $output
+END
+}
+
+sub good_integer ($input) {
+    my $good  = '';
+    my @input = split //, $input;
+    my $len   = -1 + length $input;
+OUTER: for my $i ( 0 .. $len ) {
+        if ( $i > 0 && $input[$i] eq $input[ $i - 1 ] ) {
+            next;
+        }
+        for my $j ( 1 .. $len ) {
+            my $k = $i + $j;
+            next if $k > $len;
+            my @split  = @input[ $i .. $k ];
+            my @digits = uniq sort @split;
+            next OUTER if scalar @digits > 1;
+            $good = join '', @split if scalar @split > 2;
+        }
+    }
+    return qq{"$good"} if length $good == 3;
+    return -1;
+}
diff --git a/challenge-282/dave-jacoby/perl/ch-2.pl b/challenge-282/dave-jacoby/perl/ch-2.pl
new file mode 100644
index 0000000000..ee38c2bc28
--- /dev/null
+++ b/challenge-282/dave-jacoby/perl/ch-2.pl
@@ -0,0 +1,29 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use experimental qw{ fc say postderef signatures state };
+
+my @examples = (    # added a couple test entries
+
+    qw{ pPeERrLl rRr GoO }
+);
+
+for my $input (@examples) {
+    my $output = changing_keys($input);
+    say <<"END";
+    Input:  \$str = "$input"
+    Output: $output
+END
+}
+
+sub changing_keys ($input) {
+    my $c   = 0;
+    my $len = -1 + length $input;
+    for my $i ( 1 .. $len ) {
+        my $l = fc substr $input, $i - 1, 1;
+        my $t = fc substr $input, $i, 1;
+        $c++ if $l ne $t;
+    }
+    return $c;
+}