September Morn Update

Task/Array-concatenation/Rust/array-concatenation-1.rust

@@ -0,0 +1,15 @@
+fn main() {
+    let a_vec = vec![1, 2, 3, 4, 5];
+    let b_vec = vec![6; 5];
+
+    let c_vec = concatenate_arrays(&a_vec, &b_vec);
+
+    println!("{:?} ~ {:?} => {:?}", a_vec, b_vec, c_vec);
+}
+
+fn concatenate_arrays<T: Clone>(x: &[T], y: &[T]) -> Vec<T> {
+    let mut concat = x.to_vec();
+    concat.extend_from_slice(y);
+
+    concat
+}

Task/Array-concatenation/Rust/array-concatenation-2.rust

@@ -0,0 +1,3 @@
+fn concatenate_arrays<T: Clone>(x: &[T], y: &[T]) -> Vec<T> {
+    x.iter().chain(y).cloned().collect()
+}

Task/Array-concatenation/Rust/array-concatenation.rust

@@ -1,17 +0,0 @@
-fn main() {
-    let a_vec: Vec<i32> = vec![1, 2, 3, 4, 5];
-    let b_vec: Vec<i32> = vec![6; 5];
-
-    let c_vec = concatenate_arrays::<i32>(a_vec.as_slice(), b_vec.as_slice());
-
-    println!("{:?} ~ {:?} => {:?}", a_vec, b_vec, c_vec);
-}
-
-fn concatenate_arrays<T: Clone>(x: &[T], y: &[T]) -> Vec<T> {
-    let mut concat: Vec<T> = vec![x[0].clone(); x.len()];
-
-    concat.clone_from_slice(x);
-    concat.extend_from_slice(y);
-
-    concat
-}