Long Sequence

/*
Long Sequence

Write a program that prints the first 1000 members of the sequence: 2, -3, 4, -5, 6, -7, …

    You might need to learn how to use loops in Java (search in Internet).

Input

    There is no input for this task.

Output

    Output the first 1000 members of the sequence, each on a separate line.
2

-3

4

-5

6

...
*/
for (let num = 2; num <= 1002; num++) {

    if (num % 2 === 0) {
        console.log(num);
    } else {
        console.log(num - (num * 2));
    }
}