scrabble-score

elixir/scrabble-score/.exercism/config.json

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+{
+  "authors": [
+    "rubysolo"
+  ],
+  "contributors": [
+    "andrewsardone",
+    "angelikatyborska",
+    "Cohen-Carlisle",
+    "dalexj",
+    "devonestes",
+    "etrepum",
+    "jinyeow",
+    "kytrinyx",
+    "lpil",
+    "neenjaw",
+    "parkerl",
+    "sotojuan",
+    "Teapane",
+    "waiting-for-dev"
+  ],
+  "files": {
+    "solution": [
+      "lib/scrabble.ex"
+    ],
+    "test": [
+      "test/scrabble_test.exs"
+    ],
+    "example": [
+      ".meta/example.ex"
+    ]
+  },
+  "blurb": "Given a word, compute the Scrabble score for that word.",
+  "source": "Inspired by the Extreme Startup game",
+  "source_url": "https://github.com/rchatley/extreme_startup"
+}

elixir/scrabble-score/.exercism/metadata.json

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+{"track":"elixir","exercise":"scrabble-score","id":"7f7eb3dce06b404b9c288b6ebbe97a40","url":"https://exercism.org/tracks/elixir/exercises/scrabble-score","handle":"negrienko","is_requester":true,"auto_approve":false}

elixir/scrabble-score/.formatter.exs

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+# Used by "mix format"
+[
+  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
+]

elixir/scrabble-score/.gitignore

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+# The directory Mix will write compiled artifacts to.
+/_build/
+
+# If you run "mix test --cover", coverage assets end up here.
+/cover/
+
+# The directory Mix downloads your dependencies sources to.
+/deps/
+
+# Where third-party dependencies like ExDoc output generated docs.
+/doc/
+
+# Ignore .fetch files in case you like to edit your project deps locally.
+/.fetch
+
+# If the VM crashes, it generates a dump, let's ignore it too.
+erl_crash.dump
+
+# Also ignore archive artifacts (built via "mix archive.build").
+*.ez
+
+# Ignore package tarball (built via "mix hex.build").
+scrabble_score-*.tar
+

elixir/scrabble-score/HELP.md

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+# Help
+
+## Running the tests
+
+From the terminal, change to the base directory of the exercise then execute the tests with:
+
+```bash
+$ mix test
+```
+
+This will execute the test file found in the `test` subfolder -- a file ending in `_test.exs`
+
+Documentation:
+
+* [`mix test` - Elixir's test execution tool](https://hexdocs.pm/mix/Mix.Tasks.Test.html)
+* [`ExUnit` - Elixir's unit test library](https://hexdocs.pm/ex_unit/ExUnit.html)
+
+## Pending tests
+
+In test suites of practice exercises, all but the first test have been tagged to be skipped.
+
+Once you get a test passing, you can unskip the next one by commenting out the relevant `@tag :pending` with a `#` symbol.
+
+For example:
+
+```elixir
+# @tag :pending
+test "shouting" do
+  assert Bob.hey("WATCH OUT!") == "Whoa, chill out!"
+end
+```
+
+If you wish to run all tests at once, you can include all skipped test by using the `--include` flag on the `mix test` command:
+
+```bash
+$ mix test --include pending
+```
+
+Or, you can enable all the tests by commenting out the `ExUnit.configure` line in the file `test/test_helper.exs`.
+
+```elixir
+# ExUnit.configure(exclude: :pending, trace: true)
+```
+
+## Useful `mix test` options
+
+* `test/<FILE>.exs:LINENUM` - runs only a single test, the test from `<FILE>.exs` whose definition is on line `LINENUM`
+* `--failed` - runs only tests that failed the last time they ran
+* `--max-failures` - the suite stops evaluating tests when this number of test failures
+is reached
+* `--seed 0` - disables randomization so the tests in a single file will always be ran
+in the same order they were defined in
+
+## Submitting your solution
+
+You can submit your solution using the `exercism submit lib/scrabble.ex` command.
+This command will upload your solution to the Exercism website and print the solution page's URL.
+
+It's possible to submit an incomplete solution which allows you to:
+
+- See how others have completed the exercise
+- Request help from a mentor
+
+## Need to get help?
+
+If you'd like help solving the exercise, check the following pages:
+
+- The [Elixir track's documentation](https://exercism.org/docs/tracks/elixir)
+- The [Elixir track's programming category on the forum](https://forum.exercism.org/c/programming/elixir)
+- [Exercism's programming category on the forum](https://forum.exercism.org/c/programming/5)
+- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
+
+Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
+
+If you're stuck on something, it may help to look at some of the [available resources](https://exercism.org/docs/tracks/elixir/resources) out there where answers might be found.

elixir/scrabble-score/README.md

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+# Scrabble Score
+
+Welcome to Scrabble Score on Exercism's Elixir Track.
+If you need help running the tests or submitting your code, check out `HELP.md`.
+
+## Introduction
+
+[Scrabble][wikipedia] is a word game where players place letter tiles on a board to form words.
+Each letter has a value.
+A word's score is the sum of its letters' values.
+
+[wikipedia]: https://en.wikipedia.org/wiki/Scrabble
+
+## Instructions
+
+Your task is to compute a word's Scrabble score by summing the values of its letters.
+
+The letters are valued as follows:
+
+| Letter                       | Value |
+| ---------------------------- | ----- |
+| A, E, I, O, U, L, N, R, S, T | 1     |
+| D, G                         | 2     |
+| B, C, M, P                   | 3     |
+| F, H, V, W, Y                | 4     |
+| K                            | 5     |
+| J, X                         | 8     |
+| Q, Z                         | 10    |
+
+For example, the word "cabbage" is worth 14 points:
+
+- 3 points for C
+- 1 point for A
+- 3 points for B
+- 3 points for B
+- 1 point for A
+- 2 points for G
+- 1 point for E
+
+## Source
+
+### Created by
+
+- @rubysolo
+
+### Contributed to by
+
+- @andrewsardone
+- @angelikatyborska
+- @Cohen-Carlisle
+- @dalexj
+- @devonestes
+- @etrepum
+- @jinyeow
+- @kytrinyx
+- @lpil
+- @neenjaw
+- @parkerl
+- @sotojuan
+- @Teapane
+- @waiting-for-dev
+
+### Based on
+
+Inspired by the Extreme Startup game - https://github.com/rchatley/extreme_startup

elixir/scrabble-score/lib/scrabble.ex

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+defmodule Scrabble do
+  defp char_score(char) when char in ~w(A E I O U L N R S T), do: 1
+  defp char_score(char) when char in ~w(D G), do: 2
+  defp char_score(char) when char in ~w(B C M P), do: 3
+  defp char_score(char) when char in ~w(F H V W Y), do: 4
+  defp char_score(char) when char in ~w(K), do: 5
+  defp char_score(char) when char in ~w(J X), do: 8
+  defp char_score(char) when char in ~w(Q Z), do: 10
+  defp char_score(_char), do: 0
+
+  @doc """
+  Calculate the scrabble score for the word.
+  """
+  @spec score(String.t()) :: non_neg_integer
+  def score(word) do
+    word
+    |> String.upcase()
+    |> String.graphemes()
+    |> Enum.reduce(0, fn char, score -> score + char_score(char) end)
+  end
+end

elixir/scrabble-score/mix.exs

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+defmodule Scrabble.MixProject do
+  use Mix.Project
+
+  def project do
+    [
+      app: :scrabble,
+      version: "0.1.0",
+      # elixir: "~> 1.8",
+      start_permanent: Mix.env() == :prod,
+      deps: deps()
+    ]
+  end
+
+  # Run "mix help compile.app" to learn about applications.
+  def application do
+    [
+      extra_applications: [:logger]
+    ]
+  end
+
+  # Run "mix help deps" to learn about dependencies.
+  defp deps do
+    [
+      # {:dep_from_hexpm, "~> 0.3.0"},
+      # {:dep_from_git, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"}
+    ]
+  end
+end

elixir/scrabble-score/test/scrabble_test.exs

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+defmodule ScrabbleTest do
+  use ExUnit.Case
+
+  test "empty word scores zero" do
+    assert Scrabble.score("") == 0
+  end
+
+  test "whitespace scores zero" do
+    assert Scrabble.score(" \t\n") == 0
+  end
+
+  test "uppercase letter" do
+    assert Scrabble.score("A") == 1
+  end
+
+  test "valuable letter" do
+    assert Scrabble.score("f") == 4
+  end
+
+  test "short word" do
+    assert Scrabble.score("at") == 2
+  end
+
+  test "short, valuable word" do
+    assert Scrabble.score("zoo") == 12
+  end
+
+  test "medium word" do
+    assert Scrabble.score("street") == 6
+  end
+
+  test "medium, valuable word" do
+    assert Scrabble.score("quirky") == 22
+  end
+
+  test "long, mixed-case word" do
+    assert Scrabble.score("OxyphenButazone") == 41
+  end
+
+  test "english-like word" do
+    assert Scrabble.score("pinata") == 8
+  end
+
+  test "entire alphabet available" do
+    assert Scrabble.score("abcdefghijklmnopqrstuvwxyz") == 87
+  end
+end

elixir/scrabble-score/test/test_helper.exs

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+ExUnit.start()
+ExUnit.configure(exclude: :pending, trace: true)