Greenfoot

2020/11/20

Random Number question

2020/11/20

Hello, I'd like to know what expression should be used for Greenfoot.getRandomNumber to produce even numbers in the range -20 - 20. Can anyone help?

danpost

2020/11/20

There are 21 even numbers within that range and the range starts at -20, increasing by 2:

int rand = Greenfoot.getRandomNumber(21)*2-20;

greenanarchist

2020/11/21

danpost wrote...

There are 21 even numbers within that range and the range starts at -20, increasing by 2:

int rand = Greenfoot.getRandomNumber(21)*2-20;

Great, thank you so much :)

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