Phone Number Parsing

Mix.install([
  {:kino, github: "livebook-dev/kino", override: true},
  {:kino_lab, "~> 0.1.0-dev", github: "jonatanklosko/kino_lab"},
  {:vega_lite, "~> 0.1.4"},
  {:kino_vega_lite, "~> 0.1.1"},
  {:benchee, "~> 0.1"},
  {:ecto, "~> 3.7"},
  {:math, "~> 0.7.0"},
  {:faker, "~> 0.17.0"},
  {:utils, path: "#{__DIR__}/../utils"},
  {:tested_cell, git: "https://github.com/BrooklinJazz/tested_cell"}
])

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Phone Number Parsing

You have been provided a large string of phone numbers. The problem is, each phone number does not follow a standard format.

You have been asked to convert them from the non standardized format into a standard format.

Phone numbers will be given in the following formats:

• 1231231234
• 123 123 1234
• (123)-123-1234
• (123) 123 1234
• (123)123-1234

You need to convert them into the format 123-123-1234.

text = "
1231231234
123 123 1234
(123)-123-1234
(123) 123 1234
(123)123-1234
"
PhoneNumber.parse(text)
"
123-123-1234
123-123-1234
123-123-1234
123-123-1234
123-123-1234
"

Enter your answer below.

defmodule PhoneNumber do
  def parse(string) do
  end
end

Utils.feedback(:phone_number_parsing, PhoneNumber)

Commit Your Progress

Run the following in your command line from the project folder to track and save your progress in a Git commit.

$ git add .
$ git commit -m "finish phone number parsing exercise"