snippet.rb

def mode(arr=[])
  hsh = {}
  max = 0
  arr.each do |item|
    # store the item in the array if, making certain to set it to one, if it's not in there
    hsh.has_key?(item) ? hsh[item] += 1  : hsh[item] = 1
  end
  # sort the array
  sorted_array = hsh.sort{|a,b| b[1]<=>a[1]}
  # Get the max value
  max = sorted_array[0][1]
  mode_arry = []
  # Count the array up until it's at it's max
  sorted_array.each do |arr|
    mode_arry << arr[0] if arr[1] >= max
  end
  mode_arry
end

p mode %w(a b a a b c dd e e e) # ["e", "a"]
p mode %w(a b a a b c dd e e) # ["a"]
p mode %w(snowboarding is more than fun. super fun.) # ["fun."]