Perl solution for week 110, part 1

2 files changed, 37 insertions, 0 deletions

diff --git a/challenge-110/abigail/README.md b/challenge-110/abigail/README.md
index 0de651abe6..789f3d845f 100644
--- a/challenge-110/abigail/README.md
+++ b/challenge-110/abigail/README.md
@@ -41,6 +41,7 @@ We therefore conclude the examples just contain random spaces, and we
 can completly ignore any white space in the input.
 
 ### Solutions
+[Perl](perl/ch-1.pl)
 
 ### Blog
 
diff --git a/challenge-110/abigail/perl/ch-1.pl b/challenge-110/abigail/perl/ch-1.pl
new file mode 100644
index 0000000000..4ddafea3f1
--- /dev/null
+++ b/challenge-110/abigail/perl/ch-1.pl
@@ -0,0 +1,36 @@
+#!/opt/perl/bin/perl
+
+use 5.032;
+
+use strict;
+use warnings;
+no  warnings 'syntax';
+
+use experimental 'signatures';
+use experimental 'lexical_subs';
+
+#
+# See ../README.md
+#
+
+#
+# Run as: perl ch-1.pl < input-file
+#
+#
+# The examples show we should not take the specification as a specification;
+# just a rough guideline. According to the specification, 
+# " +44 1148820341" fails the criteria not once, but twice: it contains
+# a leading space (not allowed in the specification), and it has only a
+# single space between the '+44' part and the rest, where the specification
+# requires two.
+# 
+# We therefore conclude the examples just contain random spaces, and we
+# can completly ignore any white space in the input.
+# 
+
+while (<>) {
+    print if s/\s+//gr =~ /^ (?: \+\d{12} | \(\d{2}\)\d{10} | \d{14} )$/ax
+}
+
+
+__END__