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  1. s = ",,,,C3:,D3,E3,F3,,"
  2. puts s.gsub(/\G,/, '  ').sub(/,+\z/, ']').sub(/:,+/, ':  [')
Success #stdin #stdout 0.05s 9696KB
comments (?)
stdin 
Standard input is empty
stdout 
        C3:  [D3,E3,F3]
https://ideone.com/bii3C1
language:
Ruby (ruby 2.5.5)
created:
8 years ago
visibility:
secret

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