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| author | Mark <53903062+andemark@users.noreply.github.com> | 2024-02-19 14:38:45 +0000 |
|---|---|---|
| committer | Mark <53903062+andemark@users.noreply.github.com> | 2024-02-19 14:38:45 +0000 |
| commit | c0ed66161cb9372d01302da905ae15e7d3916a3c (patch) | |
| tree | ea41beb5747995ff5b6458c134d68027a62d6a60 | |
| parent | 16999d84c38058abf33d0341227f0cf38e84d21a (diff) | |
| download | perlweeklychallenge-club-c0ed66161cb9372d01302da905ae15e7d3916a3c.tar.gz perlweeklychallenge-club-c0ed66161cb9372d01302da905ae15e7d3916a3c.tar.bz2 perlweeklychallenge-club-c0ed66161cb9372d01302da905ae15e7d3916a3c.zip | |
Challenge 257 Solutions (Raku)
| -rw-r--r-- | challenge-257/mark-anderson/raku/ch-2.raku | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/challenge-257/mark-anderson/raku/ch-2.raku b/challenge-257/mark-anderson/raku/ch-2.raku index 5492722dcc..1dc1835310 100644 --- a/challenge-257/mark-anderson/raku/ch-2.raku +++ b/challenge-257/mark-anderson/raku/ch-2.raku @@ -36,14 +36,15 @@ sub reduced-row-echelon(+@m) # the first non-zero number in a row is the pivot my @pivots = @m>>.first(*.so, :kv); - # find the first row that is all zeroes - my $k = @pivots.first(*.so.not, :k); + # the first row that is all zeroes + my $k = @pivots.first(*.not, :k); # all 0 rows are grouped at the bottom - if $k { - return False unless @pivots[$k..*].all eqv Any; - @pivots = @pivots[^$k] - } + if $k + { + return False unless @pivots[$k..*].all eqv Any; + @pivots = @pivots[^$k] + } # all pivots == 1 return False unless so @pivots>>.[1].all == 1; @@ -53,7 +54,7 @@ sub reduced-row-echelon(+@m) # pivot columns are all 0 (except for the 1) return all @pivots>>[0].map({ - all @m[*;$_].sum == 1, - all(@m[*;$_].Bag.keys) ~~ 0..1 - }) + all @m[*;$_].sum == 1, + all(@m[*;$_].Bag.keys) ~~ 0..1 + }) } |