fork(1) download 
  1. arr = [1,1,1,3,3,3,5,5,5,7,7,7,9,9,9,11,11,11,13,13,13,15,15,15]
  2. p arr.combination(3).select{|c| c.reduce(:+) == 30}
Success #stdin #stdout 0.05s 9784KB
comments (?)
stdin 
Standard input is empty
stdout 
[]
https://ideone.com/sR4wcp
language:
Ruby (ruby 2.5.5)
created:
9 years ago
visibility:
public

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