final

1 files changed, 5 insertions, 7 deletions

diff --git a/challenge-060/mark-anderson/raku/ch-1.raku b/challenge-060/mark-anderson/raku/ch-1.raku
index c8d3b23d61..0bc777c96d 100644
--- a/challenge-060/mark-anderson/raku/ch-1.raku
+++ b/challenge-060/mark-anderson/raku/ch-1.raku
@@ -8,7 +8,7 @@ sub from-excel(Str $str) {
     my $exp = @letters.keys.max;
 
     for @letters {
-        $num += ($_.ord - 64) * (26 ** $exp--);
+        $num += (.ord - 64) * (26 ** $exp--);
     }    
 
     $num;
@@ -16,28 +16,26 @@ sub from-excel(Str $str) {
 
 sub to-excel(UInt $num is copy) {
     my $string;
-    my $quotient;
     my $remainder;
     my @letters = ("A" .. "Z");
 
     while $num > 26 {
-        $quotient = ($num / 26).Int;
-        $remainder = $num % 26;
+        $remainder = $num mod 26;
+        $num div= 26;
     
         if $remainder == 0 {
-            $quotient--;
+            $num--;
             $remainder = 26;
         }
 
         $string ~= @letters[$remainder - 1];
-        $num = $quotient;
     }
 
     $string ~= @letters[$num - 1];
     $string.flip;
 }
 
-multi sub MAIN (Str $str where $str ~~ /^<[A..Z]>+$/) {
+multi sub MAIN (Str $str where $str ~~ /^ <[A..Z]>+ $/) {
     say from-excel($str);
 }