From 1febd49b8272ee47f8697b1a6e35ec8c75defee0 Mon Sep 17 00:00:00 2001
From: Ivan Reshetnikov <admin@comfycamp.space>
Date: Wed, 12 Jun 2024 16:32:43 +0500
Subject: [PATCH] codewars: solve 'anagram detection' problem

---
 codewars/elixir/anagram/.formatter.exs        |  4 +++
 codewars/elixir/anagram/.gitignore            | 26 +++++++++++++++++
 codewars/elixir/anagram/README.md             | 13 +++++++++
 codewars/elixir/anagram/lib/anagram.ex        | 14 ++++++++++
 codewars/elixir/anagram/mix.exs               | 28 +++++++++++++++++++
 codewars/elixir/anagram/test/anagram_test.exs | 14 ++++++++++
 codewars/elixir/anagram/test/test_helper.exs  |  1 +
 7 files changed, 100 insertions(+)
 create mode 100644 codewars/elixir/anagram/.formatter.exs
 create mode 100644 codewars/elixir/anagram/.gitignore
 create mode 100644 codewars/elixir/anagram/README.md
 create mode 100644 codewars/elixir/anagram/lib/anagram.ex
 create mode 100644 codewars/elixir/anagram/mix.exs
 create mode 100644 codewars/elixir/anagram/test/anagram_test.exs
 create mode 100644 codewars/elixir/anagram/test/test_helper.exs

diff --git a/codewars/elixir/anagram/.formatter.exs b/codewars/elixir/anagram/.formatter.exs
new file mode 100644
index 0000000..d2cda26
--- /dev/null
+++ b/codewars/elixir/anagram/.formatter.exs
@@ -0,0 +1,4 @@
+# Used by "mix format"
+[
+  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
+]
diff --git a/codewars/elixir/anagram/.gitignore b/codewars/elixir/anagram/.gitignore
new file mode 100644
index 0000000..e2a8783
--- /dev/null
+++ b/codewars/elixir/anagram/.gitignore
@@ -0,0 +1,26 @@
+# 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").
+anagram-*.tar
+
+# Temporary files, for example, from tests.
+/tmp/
diff --git a/codewars/elixir/anagram/README.md b/codewars/elixir/anagram/README.md
new file mode 100644
index 0000000..c752e2a
--- /dev/null
+++ b/codewars/elixir/anagram/README.md
@@ -0,0 +1,13 @@
+# Anagram
+
+An anagram is the result of rearranging the letters of a word to produce a new word.
+
+Note: anagrams are case insensitive.
+
+Complete the function to return true if the two arguments given are anagrams of each other; return false otherwise.
+
+
+## Examples
+
+- "foefet" is an anagram of "toffee"
+- "Buckethead" is an anagram of "DeathCubeK"
diff --git a/codewars/elixir/anagram/lib/anagram.ex b/codewars/elixir/anagram/lib/anagram.ex
new file mode 100644
index 0000000..0ef893e
--- /dev/null
+++ b/codewars/elixir/anagram/lib/anagram.ex
@@ -0,0 +1,14 @@
+defmodule Anagram do
+  @spec anagram?(a :: String.t(), b :: String.t()) :: boolean
+  def anagram?(a, b) do
+    Map.equal?(to_symbols(a), to_symbols(b))
+  end
+
+  @spec to_symbols(a :: String.t()) :: map()
+  defp to_symbols(a) do
+    a
+    |> String.downcase()
+    |> String.graphemes()
+    |> Enum.frequencies()
+  end
+end
diff --git a/codewars/elixir/anagram/mix.exs b/codewars/elixir/anagram/mix.exs
new file mode 100644
index 0000000..d03b1ec
--- /dev/null
+++ b/codewars/elixir/anagram/mix.exs
@@ -0,0 +1,28 @@
+defmodule Anagram.MixProject do
+  use Mix.Project
+
+  def project do
+    [
+      app: :anagram,
+      version: "0.1.0",
+      elixir: "~> 1.16",
+      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
diff --git a/codewars/elixir/anagram/test/anagram_test.exs b/codewars/elixir/anagram/test/anagram_test.exs
new file mode 100644
index 0000000..63ed1b3
--- /dev/null
+++ b/codewars/elixir/anagram/test/anagram_test.exs
@@ -0,0 +1,14 @@
+defmodule AnagramTest do
+  use ExUnit.Case
+  import Anagram
+  doctest Anagram
+
+  test "some test description" do
+    assert anagram?("foefet", "toffee") === true
+    assert anagram?("Buckethead", "DeathCubeK") === true
+    assert anagram?("Twoo", "WooT") === true
+    assert anagram?("dumble", "bumble") === false
+    assert anagram?("ound", "round") === false
+    assert anagram?("apple", "pale") === false
+  end
+end
diff --git a/codewars/elixir/anagram/test/test_helper.exs b/codewars/elixir/anagram/test/test_helper.exs
new file mode 100644
index 0000000..869559e
--- /dev/null
+++ b/codewars/elixir/anagram/test/test_helper.exs
@@ -0,0 +1 @@
+ExUnit.start()