Solution to task 1

1 files changed, 56 insertions, 0 deletions

diff --git a/challenge-228/jo-37/perl/ch-1.pl b/challenge-228/jo-37/perl/ch-1.pl
new file mode 100755
index 0000000000..d9a0e02b7c
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+++ b/challenge-228/jo-37/perl/ch-1.pl
@@ -0,0 +1,56 @@
+#!/usr/bin/perl -s
+
+use v5.24;
+use Test2::V0 '!float';
+use PDL;
+
+our ($tests, $examples);
+
+run_tests() if $tests || $examples;	# does not return
+
+die <<EOS unless @ARGV;
+usage: $0 [-examples] [-tests] [--] [N...]
+
+-examples
+    run the examples from the challenge
+ 
+-tests
+    run some tests
+
+N...
+    list of numbers
+
+EOS
+
+
+### Input and Output
+
+say uniq_sum(@ARGV);
+
+
+### Implementation
+
+sub uniq_sum {
+	my ($freq, $val) = long(\@_)->qsort->rle;
+    $val->where($freq == 1)->sum;
+}
+
+
+### Examples and tests
+
+sub run_tests {
+    SKIP: {
+        skip "examples" unless $examples;
+
+        is uniq_sum(2, 1, 3, 2), 4, 'example 1';
+        is uniq_sum(1, 1, 1, 1), 0, 'example 2';
+        is uniq_sum(2, 1, 3, 4), 10, 'example 3';
+    }
+
+    SKIP: {
+        skip "tests" unless $tests;
+	}
+
+    done_testing;
+    exit;
+}