Create ch-2.pl

1 files changed, 18 insertions, 0 deletions

diff --git a/challenge-194/james-smith/perl/ch-2.pl b/challenge-194/james-smith/perl/ch-2.pl
new file mode 100644
index 0000000000..167860f910
--- /dev/null
+++ b/challenge-194/james-smith/perl/ch-2.pl
@@ -0,0 +1,18 @@
+#!/usr/local/bin/perl
+
+use strict;
+
+use warnings;
+use feature qw(say);
+use Test::More;
+use Benchmark qw(cmpthese timethis);
+
+my @TESTS = ( ['abbc',1],['xyzyyxz',1],['xzxz',0] );
+
+is( check( $_->[0] ), $_->[1] ) for @TESTS;
+done_testing();
+
+sub check {
+  my %sc; $sc{$_} ++ for split //,$_[0];
+  sub { @_>2 && $_[0]==$_[1]+1 && $_[-1]==$_[1] ? 1 : 0 }->(sort {$b<=>$a} values %sc);
+}