Hausaufgabe Programmieren2
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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) { 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; } public static void main(String[] args) { int[] arr = {6,7,8,9,10}; 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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