From da89c0ca85231a9efb0216cdb975d08fd1f583ff Mon Sep 17 00:00:00 2001
From: David Ferrone <zapwai@gmail.com>
Date: Mon, 23 Jun 2025 08:14:56 -0400
Subject: Week 327

---
 challenge-327/zapwai/perl/ch-1.pl | 16 ++++++++++++++++
 challenge-327/zapwai/perl/ch-2.pl | 40 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+)
 create mode 100644 challenge-327/zapwai/perl/ch-1.pl
 create mode 100644 challenge-327/zapwai/perl/ch-2.pl

diff --git a/challenge-327/zapwai/perl/ch-1.pl b/challenge-327/zapwai/perl/ch-1.pl
new file mode 100644
index 0000000000..a5a189975e
--- /dev/null
+++ b/challenge-327/zapwai/perl/ch-1.pl
@@ -0,0 +1,16 @@
+use v5.38;
+
+sub proc(@ints) {
+    say "Input: @ints";
+    my @o = grep {!($_ ~~ @ints)} (1 .. @ints);
+    say "Output: @o";
+}
+
+my @ints = (1,2,1,3,2,5);
+proc(@ints);
+@ints = (1,1,1);
+proc(@ints);
+@ints = (2,2,1);
+proc(@ints);
+@ints = (2,1);
+proc(@ints);
diff --git a/challenge-327/zapwai/perl/ch-2.pl b/challenge-327/zapwai/perl/ch-2.pl
new file mode 100644
index 0000000000..01d03cd59c
--- /dev/null
+++ b/challenge-327/zapwai/perl/ch-2.pl
@@ -0,0 +1,40 @@
+use v5.38;
+
+sub mad(@ints) {
+    my $min = abs($ints[1] - $ints[0]);
+    for my $i (0 .. $#ints - 1) {
+	for my $j ($i + 1 .. $#ints) {
+	    my $diff = abs($ints[$i] - $ints[$j]);
+	    $min = $diff if ($min > $diff);
+	}
+    }
+    my @out;
+    for my $i (0 .. $#ints - 1) {
+	for my $j ($i + 1 .. $#ints) {
+	    my $diff = abs($ints[$i] - $ints[$j]);
+	    if ($diff == $min) {
+		if ($ints[$i] < $ints[$j]) {
+		    push @out, [$ints[$i], $ints[$j]];
+		} else {
+		    push @out, [$ints[$j], $ints[$i]];
+		}
+	    }
+	}
+    }
+    return @out;
+}
+
+sub proc(@ints) {
+    say "Input: @ints";
+    my @o = mad(@ints);
+    print "Output: ";
+    print "(". join(", ", @$_) . ") " for (@o);
+    say "";
+}
+
+my @ints = (4,1,2,3);
+proc(@ints);
+@ints = (1,3,7,11,15);
+proc(@ints);
+@ints = (1,5,3,8);
+proc(@ints);
-- 
cgit