You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
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replacements, molecule = DATA.read.chomp.split("\n\n")
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replacements = replacements.scan(/(\w+) \=> (\w+)/).map(&:reverse).sort_by {|k,_| -k.size}
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steps = 0
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until molecule == ?e
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k,v = replacements.find {|k,_| molecule.include?(k) }
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steps += molecule.scan(/#{k}/).size
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molecule.gsub!(k, v)
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puts "#{steps}: #{molecule}"
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end
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__END__
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Al => ThF
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Al => ThRnFAr
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B => BCa
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B => TiB
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B => TiRnFAr
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Ca => CaCa
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Ca => PB
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Ca => PRnFAr
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Ca => SiRnFYFAr
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Ca => SiRnMgAr
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Ca => SiTh
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F => CaF
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F => PMg
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F => SiAl
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H => CRnAlAr
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H => CRnFYFYFAr
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H => CRnFYMgAr
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H => CRnMgYFAr
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H => HCa
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H => NRnFYFAr
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H => NRnMgAr
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H => NTh
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H => OB
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H => ORnFAr
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Mg => BF
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Mg => TiMg
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N => CRnFAr
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N => HSi
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O => CRnFYFAr
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O => CRnMgAr
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O => HP
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O => NRnFAr
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O => OTi
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P => CaP
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P => PTi
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P => SiRnFAr
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Si => CaSi
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Th => ThCa
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Ti => BP
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Ti => TiTi
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e => HF
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e => NAl
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e => OMg
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CRnCaSiRnBSiRnFArTiBPTiTiBFArPBCaSiThSiRnTiBPBPMgArCaSiRnTiMgArCaSiThCaSiRnFArRnSiRnFArTiTiBFArCaCaSiRnSiThCaCaSiRnMgArFYSiRnFYCaFArSiThCaSiThPBPTiMgArCaPRnSiAlArPBCaCaSiRnFYSiThCaRnFArArCaCaSiRnPBSiRnFArMgYCaCaCaCaSiThCaCaSiAlArCaCaSiRnPBSiAlArBCaCaCaCaSiThCaPBSiThPBPBCaSiRnFYFArSiThCaSiRnFArBCaCaSiRnFYFArSiThCaPBSiThCaSiRnPMgArRnFArPTiBCaPRnFArCaCaCaCaSiRnCaCaSiRnFYFArFArBCaSiThFArThSiThSiRnTiRnPMgArFArCaSiThCaPBCaSiRnBFArCaCaPRnCaCaPMgArSiRnFYFArCaSiThRnPBPMgAr
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