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Let me give round one a try... There must be a better way of doing this...
use strict; use warnings; use Algorithm::Loops qw/ NestedLoops /; use Data::Dumper; my @patterns = ( [ 0, 1, 2 ], [ 0, 3, 6 ], [ 0, 4, 8 ], [ 1, 4, 7 ], [ 2, 5, 8 ], [ 2, 4, 6 ], [ 3, 4, 5 ], [ 6, 7, 8 ], ); while (<DATA>) { chomp(my @input = split /\s+/, $_); my @combinations = (); NestedLoops([ [@input], ( sub { my %used; @used{@_}= (1) x @_; return [ grep !$used{$_}, @input ]; } ) x (2), ], sub { push @combinations, [ @_ ]; return 1; }); my @output = map { Validate(\@input, $_) ? $_ : () } @combinations +; print "@input:\n", @output ? Dumper(\@output) : "Not possible", "\ +n\n"; } sub Validate { my ($input, $c) = @_; my %p = map { $_ => 1 } @$c; my @diff = map { $p{$_} ? () : $_ } @$input; foreach (@diff) { return 0 if !Canfit($c, $_); } return 1 } sub Canfit { my ($c, $e) = @_; my @l = map { split //, $_ } @$c; foreach (@patterns) { my $text = join '', @l[ @$_ ]; return 1 if $text eq $e || $text eq reverse $e; } return 0; } __DATA__ tan are nan tom men ora tan are soo and hen oar tom soo san sop hen ora

Output:
tan are nan tom men ora: $VAR1 = [ [ 'tan', 'ora', 'men' ], [ 'tom', 'are', 'nan' ] ]; tan are soo and hen oar: Not possible tom soo san sop hen ora: Not possible

In reply to Re: Re: Competition fuels obsession over Perl by Roger
in thread Competition fuels obsession over Perl by snowsmann

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