package Maths;

import java.util.Random;

public class AbsoluteValue {

    public static void main(String[] args) {
        Random random = new Random();

        /* test 1000 random numbers */
        for (int i = 1; i <= 1000; ++i) {
            int randomNumber = random.nextInt();
            assert absVal(randomNumber) == Math.abs(randomNumber);
        }
    }

    /**
     * If value is less than zero, make value positive.
     *
     * @param value a number
     * @return the absolute value of a number
     */
    public static int absVal(int value) {
        return value < 0 ? -value : value;
    }

}