Programmierung 2 - Praktikum
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package ha01;
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; } /*Liefert ein neues Array zurück ohne das erste Element*/ public static int[] removeFirst(int[] arr) { int [] arrNeu = {}; arrNeu = new int[arr.length-1]; if(arr.length != 0) { for (int i = 1; i < arr.length; i++) { arrNeu[i-1] = arr[i]; } } return arrNeu; } /*Erstellt ein neues Array ohne das letzte Element*/ public static int[] removeLast(int[] arr) { int [] arrNeu = {}; arrNeu = new int[arr.length-1]; if(arr.length != 0) { for (int i =0; i < arr.length -1; i++) { arrNeu[i] = arr[i]; } } return arrNeu; } /*Erstellt ein neues Array wo alle Zahlen quadriert werden*/
public static int[] squareEach(int[] arr) { int [] arrNeu = {}; arrNeu = new int[arr.length]; for (int i=0; i <arr.length; i++) { arrNeu[i] = arr[i] * arr[i]; } return arrNeu; } public static void main(String[] args) { int[] arr = {1,2,3,4,5}; int [] arr2 = {}; 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))); } }
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