use strict;
use warnings;

my @array=qw(a b c d e);
my $num = 13;

sub jw {
   my $average = int($num/@array);
   my %result = map{$_=>$average} @array;
   for my $i (1..($num - $average*@array)){
      ++$result{$array[$i-1]};
   }
%result }
sub ike1   { my %result; my $n=$num; $result{$array[$n%@array]}++ while ($n--); %result }
sub ike1b  { my %result; $result{$array[$_%@array]}++ for (1..$num); %result }
sub ike3   { my $i; map{$array[$i++],length}('1'x$num)=~/^@{['(.*)'.'(\1.?)'x$#array]}$/ }
sub zaxo   { my %result; @result{@array} = map { int($num/@array) + ($_ < $num % @array) } 0 .. $#array; %result }
sub davido { my %result; my @a=@array; my $n=$num; $result{do{my$v=shift@a;push@a,$v;$v}}++while$n--; %result }
sub ted    { my %result; my $n=0; $result{$array[$n++]} = int($num / ($#array + 1)) + ($num % ($#array + 1) > $n) while ($n <= $#array); %result }
sub pela   { my %result;
   foreach (1..$num) { $result{$array[int(rand(scalar(@array)))]}++; }
   $result{$_} ||= 0 foreach (@array);
%result }


use Benchmark (); 

Benchmark::cmpthese(0, {
   jw     => \&jw,
   ike1   => \&ike1,
   ike3   => \&ike3,
   ike1b  => \&ike1b,
   zaxo   => \&zaxo,
   davido => \&davido,
   ted    => \&ted,
   pela   => \&pela,
});

__END__