3 Funktionen hinzugefügt

src/.gitignore

@@ -0,0 +1 @@
+/ArrayManipulation.class

src/ArrayManipulation.java

@@ -14,6 +14,47 @@ public class ArrayManipulation {
     }
   
   public static int[] removeFirst(int[] arr) {
+	if (arr == null || arr.length==0) {
+	  int[] result = new int[0];
+	  return result;
+	}
+	  
+	if(arr.length == 1||arr.length == 0) {
+	  return arr;	  
+	}
+	int[] result = new int[arr.length-1];
+	for(int a=1;a<arr.length;a++) {
+	  result[a-1] = arr[a];
+	}
+	return result;  
+  }
+  
+  public static int[] removeLast(int[] arr) {
+    if (arr == null || arr.length==0) {
+      int[] result = new int[0];
+      return result;
+	}
+				  
+	if(arr.length == 1||arr.length == 0) {
+	  return arr;	  
+	}
+	int[] result = new int[arr.length-1];
+	for(int a=0;a<arr.length-1;a++) {
+	  result[a] = arr[a];
+	}
+	return result;   
+  }
+  
+  public static int[] squareEach(int[] arr) {
+    if (arr == null || arr.length==0) {
+	  int[] result = new int[0];
+	  return result;
+	}
+	int[] result = new int[arr.length];
+	for(int a=0;a<arr.length;a++) {
+	  result[a] = arr[a] * arr[a];
+	}
+	return result;   
 	  
   }
     
@@ -26,6 +67,8 @@ public class ArrayManipulation {
        
         int[] arr = {1,2,3,4,5};
         System.out.println(Arrays.toString(reverseArray(arr)));
-        
+        System.out.println(Arrays.toString(removeFirst(arr)));
+        System.out.println(Arrays.toString(removeLast(arr)));
+        System.out.println(Arrays.toString(squareEach(arr)));
     }
 }