From 031a3a44299cbc422b9cd5bfc6f380fa8d77be26 Mon Sep 17 00:00:00 2001
From: Lubos Kolouch <lubos@kolouch.net>
Date: Sat, 6 Nov 2021 14:39:27 +0100
Subject: Challenge 137 LK Perl

---
 challenge-137/lubos-kolouch/perl/ch-1.pl | 33 ++++++++++++++++++++++++++++++++
 challenge-137/lubos-kolouch/perl/ch-2.pl | 30 +++++++++++++++++++++++++++++
 2 files changed, 63 insertions(+)
 create mode 100644 challenge-137/lubos-kolouch/perl/ch-1.pl
 create mode 100644 challenge-137/lubos-kolouch/perl/ch-2.pl

diff --git a/challenge-137/lubos-kolouch/perl/ch-1.pl b/challenge-137/lubos-kolouch/perl/ch-1.pl
new file mode 100644
index 0000000000..ed4f70aed3
--- /dev/null
+++ b/challenge-137/lubos-kolouch/perl/ch-1.pl
@@ -0,0 +1,33 @@
+use strict;
+use warnings;
+use DateTime;
+
+sub get_long_years {
+  # Get years with 53 weeks between 1900 and 2100
+
+  my @result;
+
+  for (1900..2100) {
+    my $dt = DateTime->new(
+      year => $_,
+      month => 12,
+      day => 31);
+
+    push @result, $_ if $dt->week_number == 53;
+  }
+
+  return \@result;
+}
+
+use Test::More;
+
+is_deeply(get_long_years(), [1903, 1908, 1914, 1920, 1925,
+1931, 1936, 1942, 1948, 1953,
+1959, 1964, 1970, 1976, 1981,
+1987, 1992, 1998, 2004, 2009,
+2015, 2020, 2026, 2032, 2037,
+2043, 2048, 2054, 2060, 2065,
+2071, 2076, 2082, 2088, 2093,
+2099]);
+
+done_testing;
diff --git a/challenge-137/lubos-kolouch/perl/ch-2.pl b/challenge-137/lubos-kolouch/perl/ch-2.pl
new file mode 100644
index 0000000000..e949a112df
--- /dev/null
+++ b/challenge-137/lubos-kolouch/perl/ch-2.pl
@@ -0,0 +1,30 @@
+use strict;
+use warnings;
+
+sub is_lychrel_number {
+  my $what = shift;
+
+  my $iter_count = 0;
+  
+  while ($iter_count < 500) {
+    $iter_count++;
+
+    $what += reverse $what;
+
+    last if $what >= 10_000_000;
+
+   return 0 if $what == reverse $what;
+
+  }
+
+  return 1;
+}
+
+use Test::More;
+
+is(is_lychrel_number(56), 0);
+is(is_lychrel_number(57), 0);
+is(is_lychrel_number(59), 0);
+is(is_lychrel_number(10911), 1);
+
+done_testing;
-- 
cgit