Question

I have a disturbing case : I would like to sort a list of strings with an associated weight, like that :

@array = [{0 => "string"}, {0 => "my string"}, {2 => "my very long string which I want to match"}]

The result of the sort should be:

{2 => "my very long string which I want to match"}
{0 => "my string"}
{0 => "string"}

The first element is the very long string because the difference pound/string.length has a better percentage as others.

I tried to sort by grouping by weight, and after by strings but it doesn’t work. I also tried to calculate ratios, but I’m still not getting the right ordered list.

Thanks a lot for your answers.

Answer 1

@array.sort_by do |h| 
  pound, string = h.first
  -pound.to_f / string.length
end
#=> [{2=>"my very long string which I want to match"}, {0=>"my string"}, {0=>"string"}]