Question

insert an array in function and delete it also

Answer 1

import java.util.Scanner;

public class ArrayExample {

    // Function to insert an element at a given position
    public static int[] insert(int[] arr, int element, int position) {
        if (position < 0 || position > arr.length) {
            System.out.println("Invalid position!");
            return arr;
        }
        int[] newArr = new int[arr.length + 1];
        for (int i = 0, j = 0; i < newArr.length; i++) {
            if (i == position) {
                newArr[i] = element;
            } else {
                newArr[i] = arr[j++];
            }
        }
        return newArr;
    }

    // Function to delete an element at a given position
    public static int[] delete(int[] arr, int position) {
        if (position < 0 || position >= arr.length) {
            System.out.println("Invalid position!");
            return arr;
        }
        int[] newArr = new int[arr.length - 1];
        for (int i = 0, j = 0; i < arr.length; i++) {
            if (i != position) {
                newArr[j++] = arr[i];
            }
        }
        return newArr;
    }

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int[] arr = {1, 2, 3, 4, 5};
        System.out.print("Original Array: ");
        for (int num : arr) System.out.print(num + " ");
        System.out.println();

        // Insert
        arr = insert(arr, 99, 2); // Insert 99 at index 2
        System.out.print("After Insertion: ");
        for (int num : arr) System.out.print(num + " ");
        System.out.println();

        // Delete
        arr = delete(arr, 4); // Delete element at index 4
        System.out.print("After Deletion: ");
        for (int num : arr) System.out.print(num + " ");
        System.out.println();
    }
}