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betogrun/test.rb

Last active January 11, 2018 16:27
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Even or Odd
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test.rb
array = [0,1,2,3,4,5,6,7,8,9]
array.each_with_object({:odd => [], :even => []}) do |item, memo|
memo[item.odd? ? :odd : :even] << item
end
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Using group_by

array = [0,1,2,3,4,5,6,7,8,9]
array.group_by {|n| n.even? ? :even : :odd }

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