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robvolk/count_values_of_array.rb

Last active February 15, 2016 19:12
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Count & sort values of a Ruby Array
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count_values_of_array.rb
food = ["bacon", "eggs", "cheese", "eggs", "bacon", "bacon", "bacon"]
food.inject(Hash.new(0)) {|h, k| h[k] += 1; h }.sort_by {|k,v| -1 * v}
# => [["bacon", 4], ["eggs", 2], ["cheese", 1]]
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