From 4656cc03f9673f8324155fde968fb53116b3a0a3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A1s=20B=20Nagy?=
 <20251272+BNAndras@users.noreply.github.com>
Date: Tue, 6 Feb 2024 07:20:29 -0800
Subject: [PATCH] add reverse-string

---
 config.json                                   |  8 +++
 .../reverse-string/.docs/instructions.md      |  9 +++
 .../reverse-string/.docs/introduction.md      |  5 ++
 .../practice/reverse-string/.meta/config.json | 19 +++++++
 .../practice/reverse-string/.meta/example.erl |  6 ++
 .../practice/reverse-string/.meta/tests.toml  | 39 +++++++++++++
 .../practice/reverse-string/rebar.config      | 30 ++++++++++
 .../reverse-string/src/reverse_string.app.src |  9 +++
 .../reverse-string/src/reverse_string.erl     |  6 ++
 .../test/reverse_string_tests.erl             | 56 +++++++++++++++++++
 10 files changed, 187 insertions(+)
 create mode 100644 exercises/practice/reverse-string/.docs/instructions.md
 create mode 100644 exercises/practice/reverse-string/.docs/introduction.md
 create mode 100644 exercises/practice/reverse-string/.meta/config.json
 create mode 100644 exercises/practice/reverse-string/.meta/example.erl
 create mode 100644 exercises/practice/reverse-string/.meta/tests.toml
 create mode 100644 exercises/practice/reverse-string/rebar.config
 create mode 100644 exercises/practice/reverse-string/src/reverse_string.app.src
 create mode 100644 exercises/practice/reverse-string/src/reverse_string.erl
 create mode 100644 exercises/practice/reverse-string/test/reverse_string_tests.erl

diff --git a/config.json b/config.json
index ecd7a058..f20ce532 100644
--- a/config.json
+++ b/config.json
@@ -961,6 +961,14 @@
         "practices": [],
         "prerequisites": [],
         "difficulty": 1
+      },
+      {
+        "slug": "reverse-string",
+        "name": "Reverse String",
+        "uuid": "9400fc2a-b3e8-4982-883b-a2d574a1d7ee",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 1
       }
     ],
     "foregone": [
diff --git a/exercises/practice/reverse-string/.docs/instructions.md b/exercises/practice/reverse-string/.docs/instructions.md
new file mode 100644
index 00000000..0ff4198e
--- /dev/null
+++ b/exercises/practice/reverse-string/.docs/instructions.md
@@ -0,0 +1,9 @@
+# Instructions
+
+Your task is to reverse a given string.
+
+Some examples:
+
+- Turn `"stressed"` into `"desserts"`.
+- Turn `"strops"` into `"sports"`.
+- Turn `"racecar"` into `"racecar"`.
diff --git a/exercises/practice/reverse-string/.docs/introduction.md b/exercises/practice/reverse-string/.docs/introduction.md
new file mode 100644
index 00000000..02233e07
--- /dev/null
+++ b/exercises/practice/reverse-string/.docs/introduction.md
@@ -0,0 +1,5 @@
+# Introduction
+
+Reversing strings (reading them from right to left, rather than from left to right) is a surprisingly common task in programming.
+
+For example, in bioinformatics, reversing the sequence of DNA or RNA strings is often important for various analyses, such as finding complementary strands or identifying palindromic sequences that have biological significance.
diff --git a/exercises/practice/reverse-string/.meta/config.json b/exercises/practice/reverse-string/.meta/config.json
new file mode 100644
index 00000000..17149328
--- /dev/null
+++ b/exercises/practice/reverse-string/.meta/config.json
@@ -0,0 +1,19 @@
+{
+  "authors": [
+    "BNAndras"
+  ],
+  "files": {
+    "solution": [
+      "src/reverse_string.erl"
+    ],
+    "test": [
+      "test/reverse_string_tests.erl"
+    ],
+    "example": [
+      ".meta/example.erl"
+    ]
+  },
+  "blurb": "Reverse a given string.",
+  "source": "Introductory challenge to reverse an input string",
+  "source_url": "https://medium.freecodecamp.org/how-to-reverse-a-string-in-javascript-in-3-different-ways-75e4763c68cb"
+}
diff --git a/exercises/practice/reverse-string/.meta/example.erl b/exercises/practice/reverse-string/.meta/example.erl
new file mode 100644
index 00000000..77e46c68
--- /dev/null
+++ b/exercises/practice/reverse-string/.meta/example.erl
@@ -0,0 +1,6 @@
+-module(example).
+
+-export([reverse/1]).
+
+reverse(_String) ->
+    lists:reverse(_String).
diff --git a/exercises/practice/reverse-string/.meta/tests.toml b/exercises/practice/reverse-string/.meta/tests.toml
new file mode 100644
index 00000000..0d87a26c
--- /dev/null
+++ b/exercises/practice/reverse-string/.meta/tests.toml
@@ -0,0 +1,39 @@
+# This is an auto-generated file.
+#
+# Regenerating this file via `configlet sync` will:
+# - Recreate every `description` key/value pair
+# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
+# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
+# - Preserve any other key/value pair
+#
+# As user-added comments (using the # character) will be removed when this file
+# is regenerated, comments can be added via a `comment` key.
+
+[c3b7d806-dced-49ee-8543-933fd1719b1c]
+description = "an empty string"
+
+[01ebf55b-bebb-414e-9dec-06f7bb0bee3c]
+description = "a word"
+
+[0f7c07e4-efd1-4aaa-a07a-90b49ce0b746]
+description = "a capitalized word"
+
+[71854b9c-f200-4469-9f5c-1e8e5eff5614]
+description = "a sentence with punctuation"
+
+[1f8ed2f3-56f3-459b-8f3e-6d8d654a1f6c]
+description = "a palindrome"
+
+[b9e7dec1-c6df-40bd-9fa3-cd7ded010c4c]
+description = "an even-sized word"
+
+[1bed0f8a-13b0-4bd3-9d59-3d0593326fa2]
+description = "wide characters"
+
+[93d7e1b8-f60f-4f3c-9559-4056e10d2ead]
+description = "grapheme cluster with pre-combined form"
+include = false
+
+[1028b2c1-6763-4459-8540-2da47ca512d9]
+description = "grapheme clusters"
+include = false
\ No newline at end of file
diff --git a/exercises/practice/reverse-string/rebar.config b/exercises/practice/reverse-string/rebar.config
new file mode 100644
index 00000000..db5d9076
--- /dev/null
+++ b/exercises/practice/reverse-string/rebar.config
@@ -0,0 +1,30 @@
+%% Erlang compiler options
+{erl_opts, [debug_info, warnings_as_errors]}.
+
+{deps, [{erl_exercism, "0.1.2"}]}.
+
+{dialyzer, [
+  {warnings, [underspecs, no_return]},
+  {get_warnings, true},
+  {plt_apps, top_level_deps}, % top_level_deps | all_deps
+  {plt_extra_apps, []},
+  {plt_location, local}, % local | "/my/file/name"
+  {plt_prefix, "rebar3"},
+  {base_plt_apps, [stdlib, kernel, crypto]},
+  {base_plt_location, global}, % global | "/my/file/name"
+  {base_plt_prefix, "rebar3"}
+]}.
+
+%% eunit:test(Tests)
+{eunit_tests, []}.
+%% Options for eunit:test(Tests, Opts)
+{eunit_opts, [verbose]}.
+
+%% == xref ==
+
+{xref_warnings, true}.
+
+%% xref checks to run
+{xref_checks, [undefined_function_calls, undefined_functions,
+  locals_not_used, exports_not_used,
+  deprecated_function_calls, deprecated_functions]}.
diff --git a/exercises/practice/reverse-string/src/reverse_string.app.src b/exercises/practice/reverse-string/src/reverse_string.app.src
new file mode 100644
index 00000000..14253b2c
--- /dev/null
+++ b/exercises/practice/reverse-string/src/reverse_string.app.src
@@ -0,0 +1,9 @@
+{application, reverse_string,
+  [{description, "exercism.io - reverse string"},
+    {vsn, "0.0.1"},
+    {modules, []},
+    {registered, []},
+    {applications, [kernel,
+      stdlib]},
+    {env, []}
+  ]}.
diff --git a/exercises/practice/reverse-string/src/reverse_string.erl b/exercises/practice/reverse-string/src/reverse_string.erl
new file mode 100644
index 00000000..5c2b8df4
--- /dev/null
+++ b/exercises/practice/reverse-string/src/reverse_string.erl
@@ -0,0 +1,6 @@
+-module(reverse_string).
+
+-export([reverse/1]).
+
+reverse(_String) ->
+    undefined.
diff --git a/exercises/practice/reverse-string/test/reverse_string_tests.erl b/exercises/practice/reverse-string/test/reverse_string_tests.erl
new file mode 100644
index 00000000..d2818475
--- /dev/null
+++ b/exercises/practice/reverse-string/test/reverse_string_tests.erl
@@ -0,0 +1,56 @@
+-module(reverse_string_tests).
+
+-include_lib("erl_exercism/include/exercism.hrl").
+-include_lib("eunit/include/eunit.hrl").
+
+
+
+
+'1_reverse_an_empty_string_test_'() ->
+    Input = "",
+    Expected = "",
+    {"reverse an empty string",
+     ?_assertEqual(Expected,
+                   reverse_string:reverse(Input))}.
+
+'2_reverse_a_word_test_'() ->
+    Input = "robot",
+    Expected = "tobor",
+    {"reverse a word",
+     ?_assertEqual(Expected,
+                   reverse_string:reverse(Input))}.
+
+'3_reverse_a_capitalized_word_test_'() ->
+    Input = "Ramen",
+    Expected = "nemaR",
+    {"reverse a capitalized word",
+     ?_assertEqual(Expected,
+                   reverse_string:reverse(Input))}.
+
+'4_reverse_a_sentence_with_punctuation_test_'() ->
+    Input = "I'm hungry!",
+    Expected = "!yrgnuh m'I",
+    {"reverse a sentence with punctuation",
+     ?_assertEqual(Expected,
+                   reverse_string:reverse(Input))}.
+
+'5_reverse_a_palindrome_test_'() ->
+    Input = "racecar",
+    Expected = "racecar",
+    {"reverse a palindrome",
+     ?_assertEqual(Expected,
+                   reverse_string:reverse(Input))}.
+
+'6_reverse_an_even_sized_word_test_'() ->
+    Input = "drawer",
+    Expected = "reward",
+    {"reverse an even-sized word",
+     ?_assertEqual(Expected,
+                   reverse_string:reverse(Input))}.
+
+'7_reverse_wide_characters_test_'() ->
+    Input = "子猫",
+    Expected = "猫子",
+    {"reverse wide characters",
+     ?_assertEqual(Expected,
+                   reverse_string:reverse(Input))}.