From 9b94fe8766e532231729219e74e7a05be81ce8a5 Mon Sep 17 00:00:00 2001
From: Lubos Kolouch <lubos@kolouch.net>
Date: Sat, 20 Nov 2021 13:15:26 +0100
Subject: Challenge 139 Task 1 2 LK Perl

---
 challenge-139/lubos-kolouch/perl/ch-1.pl | 22 +++++++++++++
 challenge-139/lubos-kolouch/perl/ch-2.pl | 54 ++++++++++++++++++++++++++++++++
 2 files changed, 76 insertions(+)
 create mode 100644 challenge-139/lubos-kolouch/perl/ch-1.pl
 create mode 100644 challenge-139/lubos-kolouch/perl/ch-2.pl

diff --git a/challenge-139/lubos-kolouch/perl/ch-1.pl b/challenge-139/lubos-kolouch/perl/ch-1.pl
new file mode 100644
index 0000000000..f155ef7bda
--- /dev/null
+++ b/challenge-139/lubos-kolouch/perl/ch-1.pl
@@ -0,0 +1,22 @@
+use strict;
+use warnings;
+use Data::Dumper;
+
+sub is_jort_sorted {
+    my $what = shift;
+
+    my @sorted_arr = sort @$what;
+
+    my $str1 = join ' ', @$what;
+    my $str2 = join ' ', @sorted_arr;
+
+    return $str1 eq $str2 ? 1 : 0;
+
+}
+
+use Test::More;
+
+is( is_jort_sorted( [ 1, 2, 3, 4, 5 ] ), 1 );
+is( is_jort_sorted( [ 1, 3, 2, 4, 5 ] ), 0 );
+
+done_testing;
diff --git a/challenge-139/lubos-kolouch/perl/ch-2.pl b/challenge-139/lubos-kolouch/perl/ch-2.pl
new file mode 100644
index 0000000000..9e7f17caa9
--- /dev/null
+++ b/challenge-139/lubos-kolouch/perl/ch-2.pl
@@ -0,0 +1,54 @@
+use strict;
+use warnings;
+use bignum ( p => -100 );
+use Math::Prime::Util qw/next_prime/;
+
+sub get_repeating_pattern {
+    my $what = shift;
+
+    my $big_reverse = 1 / $what;
+    my $repeating   = $1 if ($big_reverse) =~ /(.+?)\1/msx;
+
+    return length($repeating);
+}
+
+sub is_long_prime {
+    my $what = shift;
+
+    my $repeats = get_repeating_pattern($what);
+
+    return 1 if ( $repeats > 1 ) and ( $repeats == $what - 1 );
+
+    return 0;
+}
+
+sub generate_long_primes {
+
+    my $primes_count = 0;
+    my $at_prime     = 0;
+
+    my @result;
+
+    while ( $primes_count < 5 ) {
+        $at_prime = next_prime($at_prime);
+
+        if ( is_long_prime($at_prime) ) {
+            $primes_count++;
+            push @result, $at_prime;
+        }
+    }
+
+    return \@result;
+}
+
+use Test::More;
+
+is( get_repeating_pattern(7),  6 );
+is( get_repeating_pattern(17), 16 );
+
+is( is_long_prime(7),  1 );
+is( is_long_prime(17), 1 );
+is( is_long_prime(2),  0 );
+is_deeply( generate_long_primes(), [ 7, 17, 19, 23, 29 ] );
+
+done_testing;
-- 
cgit