fertige Datei (wegen Problemen beim push so zusammen getragen)

HA1/ArrayManipulation.java

@@ -14,6 +14,12 @@ public class ArrayManipulation {
 
     }
 
+    public static int[] removeFirst(int[] arr) {
+        return Arrays.copyOfRange(arr, 1, arr.length);  // Copys the array "arr" from place 1 for the whole length of the array
+ 
+    }
+    
+    
     public static int[] removeLast(int[] arr){
         int arr2[];
         if(arr.length<=1) return arr2 = new int[0]; //if array only has 1 elements, give empty array
@@ -24,11 +30,20 @@ public class ArrayManipulation {
         return arr2; //return new array
     }
 
+    public static int[] squareEach(int[] arr) {
+
+        for (int i = 0; i < arr.length; i++) {
+            arr[i] = arr[i] * arr[i];
+        }
+        return arr;
+    }
+
     public static void main(String[] args) {
        
         int[] arr = {1,2,3,4,5};
-        System.out.println(Arrays.toString(removeLast(arr)));
-        System.out.println(Arrays.toString(reverseArray(arr)));
-        
+        System.out.println(Arrays.toString(removeFirst(arr))); // prints out the array on the Terminal which used the removefirst method
+        System.out.println(Arrays.toString(removeLast(arr))); 
+        System.out.println(Arrays.toString(squareEach(arr)));
+        System.out.println(Arrays.toString(reverseArray(arr))); // prints out the array reversed on the Terminal which used the reversearray method
     }
 }