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  1. def pangram?(sentence)
  2.   unused_letters = ('a'..'z').to_a - sentence.downcase.chars.to_a
  3.   unused_letters.empty?
  4. end
  5.  
  6. p pangram?('this is a sentence')  # ==> false
  7. p pangram?('The quick brown fox jumps over the lazy dog.')  # ==> true
Success #stdin #stdout 0s 4760KB
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Standard input is empty
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false
true
https://ideone.com/HHbfi
language:
Ruby (ruby 2.5.5)
created:
11 years ago
visibility:
public

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