5 files changed, 0 insertions, 113 deletions
diff --git a/rustlings/exercises/09_strings/README.md b/rustlings/exercises/09_strings/README.md
deleted file mode 100644
index fa2104c..0000000
--- a/rustlings/exercises/09_strings/README.md
+++ /dev/null
@@ -1,9 +0,0 @@
-# Strings
-
-Rust has two string types, a string slice (`&str`) and an owned string (`String`).
-We're not going to dictate when you should use which one, but we'll show you how
-to identify and create them, as well as use them.
-
-## Further information
-
-- [Strings](https://doc.rust-lang.org/book/ch08-02-strings.html)
diff --git a/rustlings/exercises/09_strings/strings1.rs b/rustlings/exercises/09_strings/strings1.rs
deleted file mode 100644
index 482e5de..0000000
--- a/rustlings/exercises/09_strings/strings1.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-fn current_favorite_color() -> String {
-    String::from("blue")
-}
-
-fn main() {
-    let answer = current_favorite_color();
-    println!("My current favorite color is {answer}");
-}
diff --git a/rustlings/exercises/09_strings/strings2.rs b/rustlings/exercises/09_strings/strings2.rs
deleted file mode 100644
index b03094f..0000000
--- a/rustlings/exercises/09_strings/strings2.rs
+++ /dev/null
@@ -1,13 +0,0 @@
-fn is_a_color_word(attempt: &str) -> bool {
-    attempt == "green" || attempt == "blue" || attempt == "red"
-}
-
-fn main() {
-    let word = String::from("green"); // Don't change this line.
-
-    if is_a_color_word(&word) {
-        println!("That is a color word I know!");
-    } else {
-        println!("That is not a color word I know.");
-    }
-}
diff --git a/rustlings/exercises/09_strings/strings3.rs b/rustlings/exercises/09_strings/strings3.rs
deleted file mode 100644
index 3543ad5..0000000
--- a/rustlings/exercises/09_strings/strings3.rs
+++ /dev/null
@@ -1,46 +0,0 @@
-fn trim_me(input: &str) -> &str {
-    input.trim()
-}
-
-fn compose_me(input: &str) -> String {
-    String::from(input) + " world!"
-}
-
-fn replace_me(input: &str) -> String {
-    String::from(input).replace("cars", "balloons")
-}
-
-fn main() {
-    // You can optionally experiment here.
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn trim_a_string() {
-        assert_eq!(trim_me("Hello!     "), "Hello!");
-        assert_eq!(trim_me("  What's up!"), "What's up!");
-        assert_eq!(trim_me("   Hola!  "), "Hola!");
-        assert_eq!(trim_me("Hi!"), "Hi!");
-    }
-
-    #[test]
-    fn compose_a_string() {
-        assert_eq!(compose_me("Hello"), "Hello world!");
-        assert_eq!(compose_me("Goodbye"), "Goodbye world!");
-    }
-
-    #[test]
-    fn replace_a_string() {
-        assert_eq!(
-            replace_me("I think cars are cool"),
-            "I think balloons are cool",
-        );
-        assert_eq!(
-            replace_me("I love to look at cars"),
-            "I love to look at balloons",
-        );
-    }
-}
diff --git a/rustlings/exercises/09_strings/strings4.rs b/rustlings/exercises/09_strings/strings4.rs
deleted file mode 100644
index 3f7c5e7..0000000
--- a/rustlings/exercises/09_strings/strings4.rs
+++ /dev/null
@@ -1,37 +0,0 @@
-// Calls of this function should be replaced with calls of `string_slice` or `string`.
-fn placeholder() {}
-
-fn string_slice(arg: &str) {
-    println!("{arg}");
-}
-
-fn string(arg: String) {
-    println!("{arg}");
-}
-
-// TODO: Here are a bunch of values - some are `String`, some are `&str`.
-// Your task is to replace `placeholder(…)` with either `string_slice(…)`
-// or `string(…)` depending on what you think each value is.
-fn main() {
-    string_slice("blue");
-
-    string("red".to_string());
-
-    string(String::from("hi"));
-
-    string("rust is fun!".to_owned());
-
-    string("nice weather".into());
-
-    string(format!("Interpolation {}", "Station"));
-
-    // WARNING: This is byte indexing, not character indexing.
-    // Character indexing can be done using `s.chars().nth(INDEX)`.
-    string_slice(&String::from("abc")[0..1]);
-
-    string_slice("  hello there ".trim());
-
-    string("Happy Monday!".replace("Mon", "Tues"));
-
-    string("mY sHiFt KeY iS sTiCkY".to_lowercase());
-}