Java Extended

## Challenge

Your task is to write a method to sort an integer array in such a way that it contains only even values (even numbers are those that are divisible by 2 without a remainder). After that, in the `main` method, you need to print them to the console. I've already written a method for displaying the array on the screen, so don't worry about it.

This task is a great opportunity to learn a new operator. The `%` operator returns the remainder of a division operation. For example, `5 % 2 = 1`. This is because `5` does not divide evenly by `2`, so when we divide `5` by `2`, we have a remainder of `1`. You can use this operator in the task to check if a number is even. Use the if syntax: `if (element % 2 == 0)` - this expression will check if the number is even and return `true` or `false`.

Main.java

1. 1. Create an integer variable, and initialize it with the value `0`;
1. 2. Using a `for-each` loop, iterate through the entire array and check if the number is even. If the answer is `true`, increment the `size` by `1`;
2. 3. Create a new integer array called `result` with a size equal to the previously calculated `size`;
3. 4. Create an `index` variable and initialize it to `0`;
4. 5. Using a `for-each` loop, check if the number is even. If the answer is `true`, use `result[index] = element;`, then increment the value of the `index`. Alternatively, you can use the syntax `result[index++] = element;`;
5. 6. Finally, return the `result` array from the method.
``````
package com.example;

public class Main {
static int[] sortIntArrayOnlyEvenNumbers(int[] input) {
int size = 0;
for (int element : input) {
if (element % 2 == 0) {
size++;
}
}
int[] result = new int[size];
int index = 0;
for (int element : input) {
if (element % 2 == 0) {
result[index] = element;
index++;
}
}
return result;
}

// do not change code from below
public static void main(String[] args) {
int[] firstArray = {2, 0, 7, 4, 5, 13, 6, 8, 10, 49, 28, -4, 5, 3};
int[] secondArray = {0, 1, 4, 5, 1, 6, 2, 7, 81, 20, 10, 44, 11, 7};
printArray(sortIntArrayOnlyEvenNumbers(firstArray));
printArray(sortIntArrayOnlyEvenNumbers(secondArray));
}
// do not change the code above

// do not change code from below
static void printArray(int[] array) {
for (int element : array) {
System.out.print(element + " ");
}
System.out.println();
}
// do not change the code above
}

``````

Everything was clear?

Section 2. Chapter 8