diff --git a/Rust/rustifinity/challenges/ownership.rs b/Rust/rustifinity/challenges/ownership.rs
new file mode 100644
index 0000000..9ef109e
--- /dev/null
+++ b/Rust/rustifinity/challenges/ownership.rs
@@ -0,0 +1,4 @@
+pub fn calculate_length(s: &String) -> usize {
+    // Your code here...
+    s.len()
+}