Updates to my solutions to PWCC 268.

2 files changed, 16 insertions, 15 deletions

diff --git a/challenge-268/robbie-hatley/perl/ch-1.pl b/challenge-268/robbie-hatley/perl/ch-1.pl
index f597ebc58b..82efc9d48b 100755
--- a/challenge-268/robbie-hatley/perl/ch-1.pl
+++ b/challenge-268/robbie-hatley/perl/ch-1.pl
@@ -44,13 +44,13 @@ PROBLEM NOTES:
 I'll sort both arrays then subtract the second from the first. If all elements of the difference are the same,
 that common value is our "magic number", otherwise return "none":
 
-sub magic ($matref) {
-   my @row1 = sort {$a<=>$b} @{$$matref[0]};
-   my @row2 = sort {$a<=>$b} @{$$matref[1]};
-   my @diff = map {$$_[1]-$$_[0]} zip6 @row1, @row2;
-   all {$diff[0] == $_} @diff and return $diff[0]
-   or return 'none';
-}
+   sub magic ($matref) {
+      my @row1 = sort {$a<=>$b} @{$$matref[0]};
+      my @row2 = sort {$a<=>$b} @{$$matref[1]};
+      my @diff = map {$$_[1]-$$_[0]} zip6 @row1, @row2;
+      all {$diff[0] == $_} @diff and return $diff[0]
+      or return 'none';
+   }
 
 --------------------------------------------------------------------------------------------------------------
 IO NOTES:
@@ -82,6 +82,7 @@ sub is_possaon ($matref) {
    return 1;
 }
 
+# Determine "magic number" (if any) for given matrix:
 sub magic ($matref) {
    my @row1 = sort {$a<=>$b} @{$$matref[0]};
    my @row2 = sort {$a<=>$b} @{$$matref[1]};
diff --git a/challenge-268/robbie-hatley/perl/ch-2.pl b/challenge-268/robbie-hatley/perl/ch-2.pl
index 4bb77dc174..a48e66a289 100755
--- a/challenge-268/robbie-hatley/perl/ch-2.pl
+++ b/challenge-268/robbie-hatley/perl/ch-2.pl
@@ -37,15 +37,15 @@ PROBLEM NOTES:
 This is equivalent to first sorting each array in increasing numeric order ("sort {$a<=>$b} @array"), then
 swapping pairs. Something like this:
 
-sub stairway (@array) {
-   my @zigzag = sort {$a<=>$b} @array;
-   for ( my $i = 0 ; $i <= $#zigzag - 1 ; $i += 2 ) {
-      my $temp = $zigzag[$i];
-      $zigzag[$i] = $zigzag[$i+1];
-      $zigzag[$i+1] = $temp;
+   sub stairway (@array) {
+      my @zigzag = sort {$a<=>$b} @array;
+      for ( my $i = 0 ; $i <= $#zigzag - 1 ; $i += 2 ) {
+         my $temp = $zigzag[$i];
+         $zigzag[$i] = $zigzag[$i+1];
+         $zigzag[$i+1] = $temp;
+      }
+      return @zigzag;
    }
-   return @zigzag;
-}
 
 --------------------------------------------------------------------------------------------------------------
 IO NOTES: