Thank you all.
Paul, I end up doing this:
sorted_by_second_value = Hash[hash.sort_by { |_, v| v[1] }]
sorted_by_second_value.to_a.reverse.to_h
Thanks.
On Friday, May 29, 2015 at 6:14:53 PM UTC-3, Paul Makepeace wrote:
>
> sorted_by_second_value = Hash[hash.sort_by
> <http://ruby-doc.org/core-2.2.2/Enumerable.html#method-i-sort_by> { |_,
> v| v[1] }]
>
> For those saying ruby hashes are unordered:
> http://ruby-doc.org/core-2.2.2/Hash.html
>
> Hashes enumerate their values in the order that the corresponding keys
> were inserted.
>
>
> sorted_by_second_value
> .map { |_, v| v[1] }
> => [74, 75, 84, 99, 100]
>
> Paul
>
>
> On Fri, May 29, 2015 at 6:24 AM, Gm <javap...@gmail.com <javascript:>>
> wrote:
>
>> Hi, I have this hash:
>>
>> hash = { 4049=>[4133, 100], 5814=>[4075, 84], 382543=>[4064, 74],
>> 382544=>[4065, 99], 382545=>[4066, 75] }
>>
>> I need to sort (DESC) this hash by the second item of array.
>> Example: 100, 84, 74, 99, 75
>>
>> How can I solve this problem ? I'm using sort method but can't work it
>> out.
>>
>> Thanks.
>>
>>
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