2 files changed, 92 insertions, 0 deletions
diff --git a/challenge-019/kian-meng-ang/perl5/ch-1.pl b/challenge-019/kian-meng-ang/perl5/ch-1.pl
new file mode 100644
index 0000000000..b29fa569c8
--- /dev/null
+++ b/challenge-019/kian-meng-ang/perl5/ch-1.pl
@@ -0,0 +1,25 @@
+#!/usr/bin/env perl
+# vi:et:sw=4 ts=4 ft=perl
+
+use strict;
+use warnings;
+use utf8;
+use feature qw(say);
+
+use Date::Calc qw(Days_in_Month Day_of_Week);
+
+# Naive and brute force approach, just exploring.
+foreach my $y (1900..2019) {
+    foreach my $m (1..12) {
+        my %dow_count = ();
+        foreach my $d (1..Days_in_Month($y, $m)) {
+            $dow_count{Day_of_Week($y, $m, $d)}++;
+        }
+
+        if ($dow_count{5} == 5 && $dow_count{6} == 5 && $dow_count{7} == 5) {
+            say sprintf '%s-%02d', $y, $m;
+        }
+    }
+}
+
+1;
diff --git a/challenge-019/kian-meng-ang/perl5/ch-2.pl b/challenge-019/kian-meng-ang/perl5/ch-2.pl
new file mode 100644
index 0000000000..8ba055d0d4
--- /dev/null
+++ b/challenge-019/kian-meng-ang/perl5/ch-2.pl
@@ -0,0 +1,67 @@
+#!/usr/bin/env perl
+# vi:et:sw=4 ts=4 ft=perl
+
+use strict;
+use warnings;
+use utf8;
+use feature qw(say signatures);
+no warnings qw(experimental::signatures);
+
+use Data::Section::Simple qw(get_data_section);
+
+MAIN: {
+    say sprintf "Line length: %s\n%s\n", $_, wrap(get_data_section('sample'), $_)
+        foreach map { 20 * $_ } 1..3;
+}
+
+sub wrap ($text, $line_width = 60) {
+    my $sep = ' ';
+    my $space_left = $line_width;
+    my $space_width = length $sep;
+    my $wtext = '';
+
+    foreach my $word (split $sep, $text) {
+        my $word_len = length $word;
+        if ($word_len + $space_width > $space_left) {
+            $wtext .= "\n$word$sep";
+            $space_left = $line_width - $word_len;
+        } else {
+            $space_left = $space_left - ($word_len + $space_width);
+            $wtext .= "$word$sep";
+        }
+    }
+    return $wtext;
+}
+
+1;
+
+__DATA__
+
+@@ sample
+A simple way to do word wrapping is to use a greedy algorithm that puts as many
+words on a line as possible, then moving on to the next line to do the same
+
+__END__
+
+$ perl ch-2.pl
+Line length: 20
+A simple way to do
+word wrapping is to
+use a greedy
+algorithm that puts
+as many words on a
+line as possible,
+then moving on to
+the next line to do
+the same
+
+Line length: 40
+A simple way to do word wrapping is to
+use a greedy algorithm that puts as many
+words on a line as possible, then moving
+on to the next line to do the same
+
+Line length: 60
+A simple way to do word wrapping is to use a greedy
+algorithm that puts as many words on a line as possible,
+then moving on to the next line to do the same