The answer is yes, and I have modified your code slightly, the code below should work -
sub find_paring()
{
my $white_player = shift;
my $black_player = "none";
# Get a list of players still in the running
my @possible_opponents =
keys %{$matches_remaining{$white_player}};
# Shuffle the list to add some randomness, then find the first
# avaliable opponent.
&shuffle(\@possible_opponents);
foreach (@possible_opponents)
{
# Once we have a valid match, we remove the entries from the
# match hash, and return the pair.
if (exists $matches_remaining{$_}{$white_player}){
$black_player = $_;
delete $matches_remaining{$white_player}{$_};
delete $matches_remaining{$_}{$white_player};
last;
}
}
# Return the info we have
return ($white_player, $black_player);
}
-
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