äºã¦ããGvizã使ã£ã¦ããã¸ã¥ã¢ã«åããã£ã¦ã¿ããã¨æã£ã¦ããã®ã§ããããªããªãåãçµããã«ãã¾ãããä½ãè¯ãé¡æã¯ãªããã¨æã£ã¦ããã®ã§ãããå æ¥ã解ããããªã³ã´åããã£ã¨çãï¼ãã®ãããã³æ¨ãå®éã«è¦ã¦ã¿ããã¨æãåãçµãã§ã¿ã¾ããã apple_gviz.rb # -*- coding: utf-8 -*- require 'gviz' class Node attr_accessor :freq, :left, :center, :right def initialize(freq, left = nil, center = nil, right = nil) @freq = freq @left, @center, @right = left, center, right end end class Leaf < Node attr_accessor :ch def initi

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