diff --git a/ArrayManipulation.java b/ArrayManipulation.java
new file mode 100644
index 0000000..dac87f2
--- /dev/null
+++ b/ArrayManipulation.java
@@ -0,0 +1,26 @@
+import java.util.Arrays;
+
+public class ArrayManipulation {
+
+   
+    public static int[] reverseArray(int[] arr) {
+
+        for (int i = 0; i < arr.length/2; i++) {
+            int tmp = arr[i];
+            arr[i] = arr[arr.length - 1 - i];
+            arr[arr.length - 1 - i] = tmp;
+         }
+         return arr;
+
+    }
+    public static int[] removeFirst(int[] arr) {
+        int[] result = new int[3];
+        return int[] result = Arrays.copyOfRange(arr, 1);
+    }
+    public static void main(String[] args) {
+       
+        int[] arr = {1,2,3,4,5};
+        System.out.println(Arrays.toString(reverseArray(arr)));
+        
+    }
+}
diff --git a/ArrayManipulation_L.java b/ArrayManipulation_L.java
new file mode 100644
index 0000000..745499b
--- /dev/null
+++ b/ArrayManipulation_L.java
@@ -0,0 +1,52 @@
+import java.util.Arrays;
+
+public class ArrayManipulation {
+
+   
+    public static int[] reverseArray(int[] arr) {
+
+        for (int i = 0; i < arr.length/2; i++) {
+            int tmp = arr[i];
+            arr[i] = arr[arr.length - 1 - i];
+            arr[arr.length - 1 - i] = tmp;
+         }
+         return arr;
+    }
+
+    public static int[] removeFirst(int[] arr) {
+        //temp array erstellen, mit einer stelle weniger
+        int[] temp = new int[arr.length - 1];
+        //Zahlen Rüberkopieren, bis auf die erste
+        for (int i = 1, k = 0; i < arr.length; i++) {
+            temp[k++] = arr[i];
+        }
+        return temp;
+    }
+
+    public static int[] removeLast(int[] arr) {
+        //temp array erstellen, mit einer stelle weniger
+        int[] temp = new int[arr.length - 1];
+        //Zahlen Rüberkopieren, bis auf das letzte
+        for (int i = 0, k = 0; i < temp.length; i++) {
+            temp[k++] = arr[i];
+        }
+        return temp;
+    }
+
+    public static int[] squareEach(int[] arr) {
+        for (int i = 0; i < arr.length; i++) {
+            int tmp = arr[i];
+            arr[i] = tmp*tmp;
+         }
+         return arr;
+    }
+    public static void main(String[] args) {
+       
+        int[] arr = {1,2,3,4,5};
+        System.out.println(Arrays.toString(arr));
+        System.out.println(Arrays.toString(reverseArray(arr)));
+        System.out.println(Arrays.toString(squareEach(arr)));
+        System.out.println(Arrays.toString(removeFirst(arr)));
+        System.out.println(Arrays.toString(removeLast(arr)));
+    }
+}