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  1. # -*- coding : utf-8 -*-
  2. class String
  3.   def ngram n
  4.     characters = self.split(//u)
  5.     return [self] if characters.size <= n
  6.     return 0.upto(characters.size-n).collect do |i|
  7.       characters[i, n].join
  8.     end
  9.   end
  10. end
  11.  
  12. puts "おぎやはぎですけどなにか問題でも？".ngram(2)
Success #stdin #stdout 0s 4760KB
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Standard input is empty
stdout
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おぎ
ぎや
やは
はぎ
ぎで
です
すけ
けど
どな
なに
にか
か問
問題
題で
でも
も？
https://ideone.com/2S2ig
language:
Ruby (ruby 2.5.5)
created:
12 years ago
visibility:
secret

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