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Aufrufargumente geändert

V2
Marc Leuschner 3 years ago
parent
commit
b6ba9fcd39
  1. 65
      src/ArrayManipulation.java

65
src/ArrayManipulation.java

@ -1,31 +1,62 @@
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;
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 = {1,2,3,4,5};
System.out.println(Arrays.toString(reverseArray(arr)));
}
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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