rustlings: complete 09

1 files changed, 3 insertions, 3 deletions

diff --git a/rustlings/exercises/09_strings/strings3.rs b/rustlings/exercises/09_strings/strings3.rs
index f5e45b0..3543ad5 100644
--- a/rustlings/exercises/09_strings/strings3.rs
+++ b/rustlings/exercises/09_strings/strings3.rs
@@ -1,13 +1,13 @@
 fn trim_me(input: &str) -> &str {
-    // TODO: Remove whitespace from both ends of a string.
+    input.trim()
 }
 
 fn compose_me(input: &str) -> String {
-    // TODO: Add " world!" to the string! There are multiple ways to do this.
+    String::from(input) + " world!"
 }
 
 fn replace_me(input: &str) -> String {
-    // TODO: Replace "cars" in the string with "balloons".
+    String::from(input).replace("cars", "balloons")
 }
 
 fn main() {