15 パズルを quine で作ってみました。eval((%w[a=0;loop{a=(0..15).sort_by{rand};b=a.reverse;b=a[0,4]+b[8,4]+a[8,4]+b[0,4];n=0;16.times{|i|b[i]>0&&(0..i).map{|j|b[j]>b[i]&&n+=1}};n%2>0&&break;};eval$s="b=0x#{a.map{|n... http://d.hatena.ne.jp/…

#!ruby -Ku class X attr_reader :a, :b def self./(a) new(a) end def self.to_s "365" end def initialize(a) @a = a end def /(b) @b = b print self self end def <(o) puts " #{o}" end def to_s @a.a + "スケッチ" + b.to_s end class ::Object def _ …