Random boolean with weight or bias

Question

I need to generate some random booleans. However I need to be able to specify the probability of returning true. As a results doing:

private R         


        

Answer 1

Random object needs to be intialized already.

public static boolean flipRandom(double probability) {
    Validate.isBetween(probability, 0, 1, true);
    if(probability == 0)
        return false;
    if(probability == 1)
        return true;
    if(probability == 0.5)
        return random.nextBoolean();
    return random.nextDouble() < probability ? true : false;
}