6 lines
268 B
Ruby
6 lines
268 B
Ruby
words = File.readlines("unixdict.txt")
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.group_by{|x| [x.strip!, x.reverse].min}
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.values
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.select{|v| v.size==2}
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puts "There are #{words.size} semordnilaps, of which the following are 5:"
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words.take(5).each {|a,b| puts "#{a} #{b}"}
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