Modifying Arrays

Part of the Fundamentals section of Coddy's Java journey. Lesson 60 of 73.

In addition to accessing the elements of an array, you can also modify them. To modify a specific element in an array, you can assign a new value to it using its index.

Here's an example:

String[] my_array = {"apple", "banana", "cherry"};
my_array[1] = "orange";
System.out.println(my_array[0] + ", " + my_array[1] + ", " + my_array[2]);

Output:

apple, orange, cherry

banana was changed to an orange

Challenge

Easy

Create a method named <strong>changeElement</strong> that receives 3 arguments:

First argument is an array
Second argument is an index
Third argument is a new element

The method will return a modified array by changing the element in an index that is stored in the second argument with the value in the third argument.

For example with the following arguments: changeElement<strong>(</strong>new String[] {"1", "2", "3"}, 0, "9") the method will return [9, 2, 3]

Try it yourself

import java.util.Scanner;

public class Main {
    public static String[] changeElement(String[] arr, int index, String newElement) {
        // Write code here
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String textArray = scanner.nextLine();
        int index = scanner.nextInt();
        scanner.nextLine();
        String newElement = scanner.nextLine();
        String[] arr = textArray.split(",");
        String[] modifiedArr = changeElement(arr, index, newElement);
        for (int i = 0; i < modifiedArr.length; i++) {
            System.out.print(modifiedArr[i] + " ");
        }
    }
}