clem clem - 2 months ago 19
Ruby Question

Ruby longest word in array

I built this method to find the longest word in an array, but I'm wondering if there's a better way to have done it. I'm pretty new to Ruby, and just did this as an exercise for learning the

inject
method.

It returns either the longest word in an array, or an array of the equal longest words.

class Array
def longest_word
# Convert array elements to strings in the event that they're not.
test_array = self.collect { |e| e.to_s }
test_array.inject() do |word, comparison|
if word.kind_of?(Array) then
if word[0].length == comparison.length then
word << comparison
else
word[0].length > comparison.length ? word : comparison
end
else
# If words are equal, they are pushed into an array
if word.length == comparison.length then
the_words = Array.new
the_words << word
the_words << comparison
else
word.length > comparison.length ? word : comparison
end
end
end
end
end

Answer

I would do

class Array
  def longest_word
    group_by(&:size).max.last
  end
end
Comments