uaveiro-leci/1ano/2semestre/poo/src/utils/MathTools.java

package utils;

import java.util.Random;

public class MathTools {
    public static double round(double n, int places) {
        return (Math.round(n * Math.pow(10, places))) / Math.pow(10, places);
    }

    public static double random(double minLimit, double maxLimit) {
        Random rand = new Random();
        return rand.nextDouble(minLimit, maxLimit);
    }

    public static boolean isNumPrime(int n) {
        if (n <= 1)
            return false;
        for (int i = 2; i < n; i++)
            if (n % i == 0)
                return false;
        return true;
    }
}