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48 lines
1.1 KiB
48 lines
1.1 KiB
import java.util.Arrays;
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public class ArrayManipulation {
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public static int[] reverseArray(int[] arr) {
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for (int i = 0; i < arr.length/2; i++) {
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int tmp = arr[i];
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arr[i] = arr[arr.length - 1 - i];
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arr[arr.length - 1 - i] = tmp;
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}
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return arr;
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}
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public static int[] removeFirst(int[] arr) {
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int length = arr.length;
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int[] result = new int[length - 1];
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for (int i = 1; i < arr.length; i++) {
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result[i-1] = arr[i];
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}
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return result;
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}
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public static int [] removeLast(int[] arr) {
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int [] result = new int [arr.length-1];
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for (int i =0; i<arr.length-1; i++) {
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result[i] = arr[i];
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}
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return result;
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}
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public static void main(String[] args) {
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int[] arr = {1,2,3,4,5};
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System.out.println(Arrays.toString(reverseArray(arr)));
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System.out.println(Arrays.toString(removeFirst(arr)));
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System.out.println(Arrays.toString(removeLast(arr)));
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}
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}
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