Solution to task 1

1 files changed, 58 insertions, 0 deletions

diff --git a/challenge-251/jo-37/perl/ch-1.pl b/challenge-251/jo-37/perl/ch-1.pl
new file mode 100755
index 0000000000..11402fc894
--- /dev/null
+++ b/challenge-251/jo-37/perl/ch-1.pl
@@ -0,0 +1,58 @@
+#!/usr/bin/perl -s
+
+use v5.24;
+use Test2::V0;
+
+our ($tests, $examples);
+
+run_tests() if $tests || $examples;	# does not return
+
+die <<EOS unless @ARGV;
+usage: $0 [-examples] [-tests] [N...]
+
+-examples
+    run the examples from the challenge
+ 
+-tests
+    run some tests
+
+N...
+    list of non-negative integers
+
+EOS
+
+
+### Input and Output
+
+say concat_val(@ARGV);
+
+
+### Implementation
+
+sub concat_val {
+    my $val = 0;
+	while (@_) {
+        $val += shift() . (pop() // '');
+    }
+    $val;
+}
+
+
+### Examples and tests
+
+sub run_tests {
+    SKIP: {
+        skip "examples" unless $examples;
+
+        is concat_val(6, 12, 25, 1), 1286, 'example 1';
+        is concat_val(10, 7, 31, 5, 2, 2), 489, 'example 2';
+        is concat_val(1, 2, 10), 112, 'example 3';
+    }
+
+    SKIP: {
+        skip "tests" unless $tests;
+	}
+
+    done_testing;
+    exit;
+}