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404pnf/naive implementation of alphanumeric sort in ruby

Last active December 28, 2015 20:48
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naive implementation of alphanumeric sort in ruby
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naive implementation of alphanumeric sort in ruby
>> 'a11'.split('').map { |e| e[/\d/] ? e : e.ord }.join
=> "9711"
>> def conv str
>> str.split('').map { |e| e[/\d/] ? e : e.ord }.join
>> end
=> nil
>> a
=> ["a", "a1", "a12", "b", "a2"]
>> a.sort_by { |e| conv e}
=> ["a", "a1", "a12", "a2", "b"]
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404pnf commented Nov 20, 2013

doesn't work as expected

%w(1.1 1.11 1.2).sort_by { |e| conv e}
=> ["1.1", "1.11", "1.2"] # wrong

%w(1.1 1.1.1 1.2).sort_by { |e| conv e}
=> ["1.1", "1.1.1", "1.2"]

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