From e5aab31ddde8e15c83f2d148b2a81818e1420ba4 Mon Sep 17 00:00:00 2001
From: "Jan \"Yenya\" Kasprzak" <kas@fi.muni.cz>
Date: Fri, 3 Dec 2021 06:20:46 +0100
Subject: [PATCH] Day 3: bitops or strings? subroutine or code copy?

Definitely not a Perl Golf.
---
 05.pl | 23 +++++++++++++++++++++++
 06.pl | 37 +++++++++++++++++++++++++++++++++++++
 2 files changed, 60 insertions(+)
 create mode 100755 05.pl
 create mode 100755 06.pl

diff --git a/05.pl b/05.pl
new file mode 100755
index 0000000..7fd647b
--- /dev/null
+++ b/05.pl
@@ -0,0 +1,23 @@
+#!/usr/bin/perl -w
+
+use v5.16;
+
+my ($c, @s);
+
+while (<>) {
+	$c++;
+	chomp;
+	my $i = 0;
+	for my $b (split//) {
+		$s[$i++] += $b;
+	}
+}
+
+my ($e, $g);
+for my $b (@s) {
+	$e .= ($b > $c/2) ? '1' : '0';
+	$g .= ($b > $c/2) ? '0' : '1';
+}
+
+say oct("0b$e")*oct("0b$g");
+
diff --git a/06.pl b/06.pl
new file mode 100755
index 0000000..ed4aed2
--- /dev/null
+++ b/06.pl
@@ -0,0 +1,37 @@
+#!/usr/bin/perl -w
+
+use v5.16;
+
+my ($c, @s);
+
+chomp (my @nums = <>);
+$c = @nums;
+
+my @n = @nums;
+my $pos = 0;
+while (@n > 1) {
+	my $ones = grep { substr ($_, $pos, 1) eq '1' } @n;
+	if ($ones >= @n/2) {
+		@n = grep { substr ($_, $pos, 1) eq '1' } @n;
+	} else { 
+		@n = grep { substr ($_, $pos, 1) eq '0' } @n;
+	}
+	$pos++;
+}
+my $ox = oct "0b".$n[0];
+
+@n = @nums;
+$pos = 0;
+while (@n > 1) {
+	my $ones = grep { substr ($_, $pos, 1) eq '0' } @n;
+	if ($ones > @n/2) {
+		@n = grep { substr ($_, $pos, 1) eq '1' } @n;
+	} else { 
+		@n = grep { substr ($_, $pos, 1) eq '0' } @n;
+	}
+	$pos++;
+}
+my $co = oct "0b".$n[0];
+
+say $ox * $co;
+
-- 
2.43.0