Solution to task 1

1 files changed, 56 insertions, 0 deletions

diff --git a/challenge-219/jo-37/perl/ch-1.pl b/challenge-219/jo-37/perl/ch-1.pl
new file mode 100755
index 0000000000..7f0fd3232d
--- /dev/null
+++ b/challenge-219/jo-37/perl/ch-1.pl
@@ -0,0 +1,56 @@
+#!/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: $0 [-examples] [-tests] [--] [N...]
+
+-examples
+    run the examples from the challenge
+ 
+-tests
+    run some tests
+
+N...
+    list of numbers
+
+EOS
+
+
+### Input and Output
+
+say "@{[sorted_squares(@ARGV)]}";
+
+
+### Implementation
+
+sub sorted_squares {
+	sort {$a <=> $b} map $_ * $_, @_;
+}
+
+
+### Examples and tests
+
+sub run_tests {
+    SKIP: {
+        skip "examples" unless $examples;
+
+        is [sorted_squares(-2, -1, 0, 3, 4)],
+        [0, 1, 4, 9, 16], 'example 1';
+
+        is [sorted_squares(5, -4, -1, 3, 6)],
+        [1, 9, 16, 25, 36], 'example 2';
+    }
+
+    SKIP: {
+        skip "tests" unless $tests;
+	}
+
+    done_testing;
+    exit;
+}