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use v6;
print "5x5 matrix in one line: " unless @*ARGS;
my $matrix = @*ARGS[0] || get();
$matrix ||= "abcdefghijklmnopqrstuvwxy";
$matrix.chars == 25 or die "Matrix length MUST be 25 characters.\n";
my @matrix = [ '_' xx 7 ];
push @matrix, [ '_', (split "", substr $matrix, 0, 5, ''), '_' ] while $matrix;
push @matrix, [ '_' xx 7 ];
my @adj;
for 1..5 -> $y {
for 1..5 -> $x {
for -1..1 -> $dx {
for -1..1 -> $dy {
$dy or $dx or next;
@matrix[$y + $dy][$x + $dx] eq '_' and next;
push @adj[$y][$x], { x => ($x + $dx), y => ($y + $dy) };
}
}
}
}
sub build_re ($y, $x, $todo is copy, %had? is copy) {
%had{"$y/$x"} = 1;
my $r = @matrix[$y][$x] or die "y=$y,x=$x is empty";
--$todo or return $r;
my @next; #= gather {
for @adj[$y][$x] -> $adj {
%had{"$adj<y>/$adj<x>"}++ and next;
#take build_re $adj<y>, $adj<x>, $todo, %had;
push @next, build_re $adj<y>, $adj<x>, $todo, %had;
}
#} or return $r;
@next or return $r;
return $todo == 1
?? "$r\<[{ @next.join('') }]>?"
!! "$r\[{ @next.join('|') }]{ $todo < 4 ?? '?' !! '' }";
}
my @re;
#say build_re 1, 1, 5;
#say "done";
#exit;
#my $re = #rule {
# ^ [ <$(
for 1..5 -> $y {
for 1..5 -> $x {
push @re, build_re $y, $x, 6;
}
}
# }
# )> ] $
#};
my $re = join('|', @re);
=foo
my %scores = (
a => 1, b => 3, c => 3, d => 2, e => 1, f => 4, g => 2, h => 4, i => 1,
j => 8, k => 5, l => 1, m => 3, n => 1, o => 1, p => 3, q =>10, r => 1,
s => 1, t => 1, u => 1, v => 4, w => 4, x => 8, y => 4, z =>10
);
%scores.values >>*=>> 10;
gather {
for slurp '/usr/share/dict/words' :chomp orelse die {
next if /<-[a-z]>/;
/$re/ and take { word => $_, score => [+](%scores{ .letters }) };
}
}
==> sort [ { -.<score> }, { .<word>.length }, { .<word> } ];
==> my @words;
say sprintf 'MATRIX IS WORTH %d POINTS' <== [+] @words>>.[0];
say sprintf '%3d %s' <== $_[1], $_[0] for @words;
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