Solution to task 2

1 files changed, 65 insertions, 0 deletions

diff --git a/challenge-272/jo-37/perl/ch-2.pl b/challenge-272/jo-37/perl/ch-2.pl
new file mode 100755
index 0000000000..7f1ee3903f
--- /dev/null
+++ b/challenge-272/jo-37/perl/ch-2.pl
@@ -0,0 +1,65 @@
+#!/usr/bin/perl -s
+
+use v5.24;
+use Test2::V0 '!float';
+use PDL;
+use PDL::NiceSlice;
+use PDL::Char;
+
+our ($tests, $examples);
+
+run_tests() if $tests || $examples;	# does not return
+
+die <<EOS unless @ARGV;
+usage: $0 [-examples] [-tests] [STR]
+
+-examples
+    run the examples from the challenge
+ 
+-tests
+    run some tests
+
+-verbose
+    enable trace output
+
+STR
+    an ASCII string
+
+EOS
+
+
+### Input and Output
+
+say score(shift);
+
+
+### Implementation
+#
+# For details see:
+# https://github.sommrey.de/the-bears-den/2024/06/07/ch-272.html#task-2
+
+
+sub score {
+	my $s = PDL::Char->new(shift);
+    sum abs long($s(0:-2)) - long($s(1:-1));
+}
+
+
+### Examples and tests
+
+sub run_tests {
+    SKIP: {
+        skip "examples" unless $examples;
+
+        is score("hello"), 13, "example 1";
+        is score("perl"), 30, "example 2";
+        is score("raku"), 37, "example 3";
+    }
+
+    SKIP: {
+        skip "tests" unless $tests;
+	}
+
+    done_testing;
+    exit;
+}