Merge pull request #464 from choroba/ech19u

Improve E. Choroba's solution according to his blog post

3 files changed, 8 insertions, 8 deletions

diff --git a/challenge-019/e-choroba/blog.txt b/challenge-019/e-choroba/blog.txt
new file mode 100644
index 0000000000..60e0749e67
--- /dev/null
+++ b/challenge-019/e-choroba/blog.txt
@@ -0,0 +1 @@
+http://blogs.perl.org/users/e_choroba/2019/08/perl-weekly-challenge-019-five-weekends-and-paragraph-wrapping.html
diff --git a/challenge-019/e-choroba/perl5/ch-1.pl b/challenge-019/e-choroba/perl5/ch-1.pl
index f6b0f73fa4..5b436e9287 100755
--- a/challenge-019/e-choroba/perl5/ch-1.pl
+++ b/challenge-019/e-choroba/perl5/ch-1.pl
@@ -10,9 +10,10 @@ my $date = 'Time::Piece'->strptime(
     '1900-01-01 12:00:00', '%Y-%m-%d %H:%M:%S');
 
 while ($date->year < 2020) {
-    $date += ONE_DAY until $date->day eq 'Fri';
-    if ($date->mday == 1 && $date->month_last_day == 31) {
-        say $date->strftime('%Y-%m');
-    }
-    $date += ($date->month_last_day - $date->mday + 1) * ONE_DAY;
+    next if $date->day ne 'Fri';
+
+    say $date->strftime('%Y-%m') if $date->month_last_day == 31;
+
+} continue {
+    $date += $date->month_last_day * ONE_DAY;
 }
diff --git a/challenge-019/e-choroba/perl5/ch-2.pl b/challenge-019/e-choroba/perl5/ch-2.pl
index d6705639d3..c1b1e9b76d 100755
--- a/challenge-019/e-choroba/perl5/ch-2.pl
+++ b/challenge-019/e-choroba/perl5/ch-2.pl
@@ -11,9 +11,7 @@ sub wrap_paragraph {
         if (length $paragraph <= $width) {
             $pos = length $paragraph;
         } else {
-            $pos = $width;
-            --$pos until ' ' eq substr $paragraph, $pos, 1
-                   or $pos < 0;
+            $pos = rindex $paragraph, ' ', $width;
             $pos = $width if $pos < 0;
         }
         $out .= substr $paragraph, 0, $pos, "";