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

Your way is probably better, code golf-wise, but another way to do it is like this:

public boolean getRandomBoolean() {
    Random random = new Random();
    //For 1 in 5
    int chanceOfTrue = 5;

    if (random.nextInt(chanceOfTrue) == 0) {
        return true;
    } else {
        return false;
    }
}

Or for 2 in 5, try this:

public boolean getRandomBoolean() {
    Random random = new Random();
    //For 2 in 5
    int chanceOfTrue = 5;
    int randInt = random.nextInt(chanceOfTrue);

    if (randInt == 0 || randInt == 1) {
        return true;
    } else {
        return false;
    }
}