Solve 258: Count Even Digits Number & Sum of Values by E. Choroba

2 files changed, 31 insertions, 0 deletions

diff --git a/challenge-258/e-choroba/perl/ch-1.pl b/challenge-258/e-choroba/perl/ch-1.pl
new file mode 100755
index 0000000000..f31fb68f7f
--- /dev/null
+++ b/challenge-258/e-choroba/perl/ch-1.pl
@@ -0,0 +1,14 @@
+#!/usr/bin/perl
+use warnings;
+use strict;
+use experimental qw( signatures );
+
+sub count_even_digits_number(@ints) {
+    scalar grep 0 == length() % 2, @ints
+}
+
+use Test::More tests => 3;
+
+is count_even_digits_number(10, 1, 111, 24, 1000), 3, 'Example 1';
+is count_even_digits_number(111, 1, 11111), 0, 'Example 2';
+is count_even_digits_number(2, 8, 1024, 256), 1, 'Example 3';
diff --git a/challenge-258/e-choroba/perl/ch-2.pl b/challenge-258/e-choroba/perl/ch-2.pl
new file mode 100755
index 0000000000..5740dcd6b2
--- /dev/null
+++ b/challenge-258/e-choroba/perl/ch-2.pl
@@ -0,0 +1,17 @@
+#!/usr/bin/perl
+use warnings;
+use strict;
+use experimental qw( signatures );
+
+use List::Util qw{ sum };
+
+sub sum_of_values($ints, $k) {
+    # See perldoc -f unpack for this one.
+    sum(@$ints[ grep $k == unpack('%32b*', pack N => $_), 0 .. $#$ints ])
+}
+
+use Test::More tests => 3;
+
+is sum_of_values([2, 5, 9, 11, 3], 1), 17, 'Example 1';
+is sum_of_values([2, 5, 9, 11, 3], 2), 11, 'Example 2';
+is sum_of_values([2, 5, 9, 11, 3], 0),  2, 'Example 3';