From 2a735f68683143c368a9da418518243f9c10b47a Mon Sep 17 00:00:00 2001
From: Avery Winters <git@averywinters.org>
Date: Wed, 11 Oct 2023 10:56:50 -0500
Subject: [PATCH] Solve rust/reverse-string

---
 flake.nix                                   | 1 +
 rust/reverse-string/Cargo.toml              | 1 +
 rust/reverse-string/src/lib.rs              | 8 +++++++-
 rust/reverse-string/tests/reverse-string.rs | 7 -------
 4 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/flake.nix b/flake.nix
index c837204..5c73ca1 100644
--- a/flake.nix
+++ b/flake.nix
@@ -35,6 +35,7 @@
         {package = pkgs.exercism;}
         {package = pkgs.nil;}
         {package = pkgs.rustc;}
+        {package = pkgs.rustfmt;}
         {package = pkgs.rust-analyzer;}
       ];
     };
diff --git a/rust/reverse-string/Cargo.toml b/rust/reverse-string/Cargo.toml
index 52b902c..1f894d5 100644
--- a/rust/reverse-string/Cargo.toml
+++ b/rust/reverse-string/Cargo.toml
@@ -1,4 +1,5 @@
 [dependencies]
+unicode-segmentation = "1.10.1"
 
 [features]
 grapheme = []
diff --git a/rust/reverse-string/src/lib.rs b/rust/reverse-string/src/lib.rs
index 01e0d4d..22722c2 100644
--- a/rust/reverse-string/src/lib.rs
+++ b/rust/reverse-string/src/lib.rs
@@ -1,3 +1,9 @@
+use unicode_segmentation::UnicodeSegmentation;
+
 pub fn reverse(input: &str) -> String {
-    todo!("Write a function to reverse {input}");
+    if cfg!(feature = "grapheme") {
+        input.graphemes(true).rev().collect()
+    } else {
+        input.chars().rev().collect()
+    }
 }
diff --git a/rust/reverse-string/tests/reverse-string.rs b/rust/reverse-string/tests/reverse-string.rs
index b80eef3..e6ea31c 100644
--- a/rust/reverse-string/tests/reverse-string.rs
+++ b/rust/reverse-string/tests/reverse-string.rs
@@ -19,49 +19,42 @@ fn an_empty_string() {
 }
 
 #[test]
-#[ignore]
 /// a word
 fn a_word() {
     process_reverse_case("robot", "tobor");
 }
 
 #[test]
-#[ignore]
 /// a capitalized word
 fn a_capitalized_word() {
     process_reverse_case("Ramen", "nemaR");
 }
 
 #[test]
-#[ignore]
 /// a sentence with punctuation
 fn a_sentence_with_punctuation() {
     process_reverse_case("I'm hungry!", "!yrgnuh m'I");
 }
 
 #[test]
-#[ignore]
 /// a palindrome
 fn a_palindrome() {
     process_reverse_case("racecar", "racecar");
 }
 
 #[test]
-#[ignore]
 /// an even-sized word
 fn an_even_sized_word() {
     process_reverse_case("drawer", "reward");
 }
 
 #[test]
-#[ignore]
 /// wide characters
 fn wide_characters() {
     process_reverse_case("子猫", "猫子");
 }
 
 #[test]
-#[ignore]
 #[cfg(feature = "grapheme")]
 /// grapheme clusters
 fn grapheme_clusters() {