yeah, first "*" never tries 0. (update: hmm, no, it does try, for 10.. then I don't know why..) But if you actually specify the max number of matches
my $choices = join "\n ",
map { "( .{$_} (?{ my \%r = \%{\$^R}; \$r{$_}++; +{ \%r } }) ){0,
+".(int($amount/$_))."}" }
@bills;
it works fine:
12:28pm /home/Ivancho/bin> probichka.pl 20
(?x-ism:
^
(?{ +{} })
( .{1} (?{ my %r = %{$^R}; $r{1}++; +{ %r } }) ){0,20}
( .{5} (?{ my %r = %{$^R}; $r{5}++; +{ %r } }) ){0,4}
( .{10} (?{ my %r = %{$^R}; $r{10}++; +{ %r } }) ){0,2}
( .{20} (?{ my %r = %{$^R}; $r{20}++; +{ %r } }) ){0,1}
( .{50} (?{ my %r = %{$^R}; $r{50}++; +{ %r } }) ){0,0}
( .{100} (?{ my %r = %{$^R}; $r{100}++; +{ %r } }) ){0,0}
$
(?{ push(@matches, $^R) })
(?!)
)
$VAR1 = [
{
'1' => 20
},
{
'1' => 15,
'5' => 1
},
{
'1' => 10,
'5' => 2
},
{
'1' => 10,
'10' => 1
},
{
'1' => 5,
'5' => 3
},
{
'1' => 5,
'10' => 1,
'5' => 1
},
{
'5' => 4
},
{
'10' => 1,
'5' => 2
},
{
'10' => 2
},
{
'20' => 1
}
];
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