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  1. class GenString
  2.     def initialize(n)
  3.         @a = Array.new(n)
  4.     end
  5.  
  6.     def binString(n)
  7.         if n < 1
  8.             @a.each_slice(3) { |a,b,c| puts [c,b,a]*'  ' }
  9.         else
  10.             @a[n-1] = 0
  11.             binString(n-1)
  12.             @a[n-1] = 1
  13.             binString(n-1)
  14.         end
  15.     end
  16. end
  17.  
  18. gen = GenString.new(3)
  19. gen.binString(3)
Success #stdin #stdout 0.01s 7456KB
comments ()
stdin
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Standard input is empty
stdout
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0  0  0
0  0  1
0  1  0
0  1  1
1  0  0
1  0  1
1  1  0
1  1  1
https://ideone.com/jjmTBh
language:
Ruby (ruby 2.5.5)
created:
10 years ago
visibility:
public

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