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| -rwxr-xr-x | challenge-162/luca-ferrari/raku/ch-1.p6 | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/challenge-162/luca-ferrari/raku/ch-1.p6 b/challenge-162/luca-ferrari/raku/ch-1.p6 new file mode 100755 index 0000000000..0c4ccef759 --- /dev/null +++ b/challenge-162/luca-ferrari/raku/ch-1.p6 @@ -0,0 +1,6 @@ +#!raku + +sub MAIN( Str $isbn where { $isbn.chars == 12 && $isbn.comb.grep( * ~~ / <[0 .. 9]> / ).elems == $isbn.chars } ) { + my $position = 0; + say 10 - ( $isbn.comb.map( { $_ * ( ++$position %% 2 ?? 3 !! 1 ) } ).sum % 10 ); +} |