Add a link to E. Choroba's blog about 044

Also, update the solutions: don't skip the last mask in task 1 and
don't use an additional variable for a negligible reduction of the hash.

3 files changed, 4 insertions, 4 deletions

diff --git a/challenge-044/e-choroba/blog.txt b/challenge-044/e-choroba/blog.txt
new file mode 100644
index 0000000000..e261bf0ba3
--- /dev/null
+++ b/challenge-044/e-choroba/blog.txt
@@ -0,0 +1 @@
+http://blogs.perl.org/users/e_choroba/2020/01/perl-weekly-challenge-044-one-hundred-two-hundred.html
diff --git a/challenge-044/e-choroba/perl/ch-1.pl b/challenge-044/e-choroba/perl/ch-1.pl
index a57b89a121..13e45ea8cd 100755
--- a/challenge-044/e-choroba/perl/ch-1.pl
+++ b/challenge-044/e-choroba/perl/ch-1.pl
@@ -39,9 +39,10 @@ sub increment {
 }
 
 my @mask = (NOTHING) x (@digits - 1);
-while (grep $_ != MINUS, @mask) {
+while (1) {
     my $expression = apply(\@mask);
     say $expression if 100 == evaluate($expression);
+    last unless grep $_ != MINUS, @mask;
     increment(\@mask);
 }
 
diff --git a/challenge-044/e-choroba/perl/ch-2.pl b/challenge-044/e-choroba/perl/ch-2.pl
index 6e63e62be3..5bf43cacf3 100755
--- a/challenge-044/e-choroba/perl/ch-2.pl
+++ b/challenge-044/e-choroba/perl/ch-2.pl
@@ -5,12 +5,10 @@ use feature qw{ say };
 
 my %possibilities = (1 => []);
 while (! exists $possibilities{200}) {
-    my %next;
     for my $p (keys %possibilities) {
-        $next{ $_ } = [ @{ $possibilities{$p} }, $p ]
+        $possibilities{ $_ } ||= [ @{ $possibilities{$p} }, $p ]
             for $p + 1, $p * 2;
     }
-    %possibilities = %next;
 }
 
 my @moves = @{ $possibilities{200} };