Solution to task 1

1 files changed, 101 insertions, 0 deletions

diff --git a/challenge-344/jo-37/perl/ch-1.pl b/challenge-344/jo-37/perl/ch-1.pl
new file mode 100755
index 0000000000..22ae8a2a60
--- /dev/null
+++ b/challenge-344/jo-37/perl/ch-1.pl
@@ -0,0 +1,101 @@
+#!/usr/bin/perl
+
+use v5.26;
+use Test2::V0 -no_srand;
+use Test2::Tools::Subtest 'subtest_streamed';
+use Getopt::Long;
+use experimental 'signatures';
+
+use Math::Prime::Util qw(fromdigits todigits);
+
+
+### Options and Arguments
+
+my ($tests, $examples, $verbose, $x);
+GetOptions(
+    'examples!' => \$examples,
+    'tests!'    => \$tests,
+    'verbose!'  => \$verbose,
+    'x=i'       => \$x,
+) or usage();
+
+run_tests($examples, $tests);	# tests do not return
+
+usage() unless @ARGV && defined $x;
+
+sub usage {
+    die <<~EOS;
+    $0 - Task Title
+
+    usage: $0 [-examples] [-tests] [-verbose] [--] [-x X N...]
+
+    -examples
+        run the examples from the challenge
+     
+    -tests
+        run some tests
+
+    -x
+        an integer
+
+    N...
+        list of integers
+
+    EOS
+}
+
+
+### Input and Output
+
+say "(@{[array_form_comp($x, \@ARGV)]})";
+
+
+### Implementation
+#
+# For details see:
+# https://github.sommrey.de/the-bears-den/2025/10/23/ch-344.html#task-1
+
+sub array_form_comp ($x, $ints) {
+    todigits fromdigits($ints) + $x;
+}
+
+
+### Examples and Tests
+
+sub run_tests ($examples, $tests) {
+    return unless $examples || $tests;
+
+    state sub run_example ($args, $expected, $name) {
+        my $result = [array_form_comp(@$args)];
+        like $result, $expected,
+            "$name: ($args->[1]->@*) + $args->[0] -> (@$expected)";
+    }
+
+    plan 2;
+
+    $examples ? subtest_streamed(examples => sub {
+        my @examples = (
+            [[12, [1, 2, 3, 4]], [1, 2, 4, 6], 'example 1'],
+            [[181, [2, 7, 4]], [4, 5, 5], 'example 2'],
+            [[1, [9, 9, 9]], [1, 0, 0, 0], 'example 3'],
+            [[999, [1, 0, 0, 0]], [1, 9, 9, 9], 'example 4'],
+            [[1000, [0]], [1, 0, 0, 0], 'example 5'],
+        );
+        plan scalar @examples;
+        for (@examples) {
+            run_example @$_;
+        }
+    }) : pass 'skip examples';
+
+    $tests ? subtest_streamed(tests => sub {
+        my @tests = (
+            [[-1, [1, 0, 0]], [9, 9], 'minus'],
+        );
+        plan scalar @tests;
+        for (@tests) {
+            run_example @$_;
+        }
+    }) : pass 'skip tests';
+
+    exit;
+}