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  1. s = 'a5bc2cdf3'
  2. index = 5
  3. res = s.gsub(/([a-zA-Z]+)(\d+)/){$1*$2.to_i}
  4. puts res[index]
Success #stdin #stdout 0.02s 9664KB
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https://ideone.com/cLLUNG
language:
Ruby (ruby 2.5.5)
created:
9 years ago
visibility:
secret

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