15 lines
633 B
Elixir
15 lines
633 B
Elixir
defmodule Words do
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@doc """
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Count the number of words in the sentence.
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Words are compared case-insensitively.
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"""
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@spec count(String.t) :: map
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def count(sentence) do
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tokenized_sentence = String.split(sentence, ~r{\W}, trim: true)
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blanked_punctuation = Enum.map(tokenized_sentence, (fn x -> String.split(x, ~r{\W}) end))
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removed_punctuation = Enum.reject(blanked_punctuation, (fn x -> x == "" end))
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removed_punctuation
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Enum.reduce(removed_punctuation, Map.new(), (fn (x, acc) -> Map.update(acc, List.first(x), 1, (fn y -> (y + 1) end)) end))
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end
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end
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