Rubyによる不適切なFizzBuzzの世界 ref: http://qiita.com/supermomonga/items/b8faf7441ada9c310282

ascii_art.rb

__,__,f,i,z,z,__,__,b,u,z,z,__,__=DATA.map(&method(:eval)).map &:size
F        = (f* i+z+z+b+u+z+z) *(i**i*i-i**z)/i
  I      = (f**i+z+z+b+u+z+z) +i**i+i**z
    Z    = (f**i+z+z+b+u+z+z) +f*i+i
      Z
B        = (f* i+z+z+b+u+z+z) *(i**i*i-i**z)/i-i**i
  U      = (f**i+z+z+b+u+z+z) +f*i-i-i**z
    Z
      Z
((([[f,i,z,z,b,u,z,z].inject(&:*)]*i).inject(&:**))..(f**i+z+z+b+u+z+z)).map{|fizzbuzz|
  case [F,i,z,z,B,u,z,z].inject &:*
  when fizzbuzz %(f+f/i)     then [F,I,Z,Z,B,U,Z,Z]
  when fizzbuzz %(i+i**z)    then [F,I,Z,Z]
  when fizzbuzz %(i**i+i**z) then [B,U,Z,Z]
  else (% %s % fizzbuzz).chars.map(&:to_i).map &(f**i/i-i).method(:+)
  end.pack 'c*'
}.map &method(:puts)
__END__
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%%  %%%%%%%%%%%%%%%%  %%%%%%%%%%%%%%  %%%%%%%%%%%%  %%%%%%%%%%%%%%%%%%%%%%%%%%%
%%          %%%%%%%%  %%%%%%%%%%%%  %%%%%%%%%%%%  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%  %%%%%%%%%%%%%%%%  %%%%%%%%%%  %%%%%%%%%%%%  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%  %%%%%%%%%%%%          %%%%          %%%%          %%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%        %%%%%%  %%%%%%  %%%%          %%%%          %%%
%%%%%%%%%%%%%%%%%%%%%%%%  %%%%  %%%%%%  %%%%%%  %%%%%%%%%%  %%%%%%%%%%%%  %%%%%
%%%%%%%%%%%%%%%%%%%%%%%%  %%      %%%%  %%%%%%  %%%%%%%%  %%%%%%%%%%%%  %%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%  %%%%%%  %%%%  %%%%%%  %%%%%%  %%%%%%%%%%%%  %%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%          %%%%          %%%%          %%%%          %%%
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basic.rb

(1..100).each do |n|
  puts case 0
  when n % 15 then :FizzBuzz
  when n % 3 then :Fizz
  when n % 5 then :Buzz
  else n
  end
end

default_value.rb

(1..100).map(
  &->_{{0=>:FizzBuzz,3=>:Fizz,5=>:Buzz,6=>:Fizz,9=>:Fizz,10=>:Buzz,12=>:Fizz}.fetch _%15,_}
).map &method(:puts)

file10.txt

[70, 105, 122, 122, 66, 117, 122, 122].pack 'c*'
#=> "FizzBuzz"

file6.txt

eval "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%"
#=> ""

eval "%%          %%%%          %%%%          %%%%          %%%%%%%%%%%%%%%%%%%%%%%%%"
#=> "          "

eval "%%  %%%%%%%%%%%%%%%%  %%%%%%%%%%%%%%  %%%%%%%%%%%%  %%%%%%%%%%%%%%%%%%%%%%%%%%%"
#=> "  "

eval "%%          %%%%%%%%  %%%%%%%%%%%%  %%%%%%%%%%%%  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%"
#=> "          "

file7.txt

%%          %%%%          %%%%          %%%%          %%%%%%%%%%%%%%%%%%%%%%%%%

file8.txt

%%          %.%(
  %%%.%(
    %%  %.%(
      %%%.%(
        %%%.%(
          %%  %.%(
            %%%.%(
              %%%.%(
                %%  %.%(
                  %%%.%(
                    %%%.%(
                      %%%.%(
                        %%%.%(
                          %%%.%(
                            %%%.%(%%%)
                          )
                        )
                      )
                    )
                  )
                )
              )
            )
          )
        )
      )
    )
  )
)

file9.txt

%`          `.%(
  %``.%(
    %`  `.%(
      %``.%(
        %``.%(
          %`  `.%(
            %``.%(
              %``.%(
                %`  `.%(
                  %``.%(
                    %``.%(
                      %``.%(
                        %``.%(
                          %``.%(
                            %``.%(%``)
                          )
                        )
                      )
                    )
                  )
                )
              )
            )
          )
        )
      )
    )
  )
)

method_missing.rb

module Kernel
  define_method '0', -> idx, _ { %w`Fizz Buzz FizzBuzz`[idx] }
end
def method_missing n, _ = nil, orig = nil
  v, i = [3,5,15].map{|_|n.to_s.to_i % _}.each_with_index.sort_by{|_|[_[0],_[1]*-1]}.first
  return _ ? orig : send(v.to_s, i, n)
end
(1..100).map(&:to_s).map(&method(:send)).map(&:to_s).map(&method(:puts))

php.rb

p <<'PHP_VERSION;'
<?php
PHP_VERSION;
print "\033[1F\033[1M";
//.tap{ define_method :range, -> s,e { s.upto e } }
//.tap{ define_method :array_map, -> f,seq { seq.map{ |x| f.(x) } } }
//.tap{ define_method :function, -> x,&b { -> x { $x=x;b.call } } }
array_map(function($x){
  print $x % 15 == 0 ? 'FizzBuzz' : ($x % 3 == 0 ? 'Fizz' : ($x % 5 == 0 ? 'Buzz' : $x));
  print "\n";
}, range(1,100));

tap.rb

(1..100).map{|_|
  _.tap{|_|
    break :FizzBuzz if _ % 15 == 0
    break :Fizz if _ % 3 == 0
    break :Buzz if _ % 5 == 0
  }
}.map &method(:puts)