Help me to understand this program

Question

https://code.sololearn.com/cLy5sCE6KPM0/?ref=app

Answer 1

Sindhuja Selvakumar
This code will always return 0 because the random() method will generate a double value between 0 and 1 but both excluded.

Your (int) will always truncate the decimal values produced by Math.random() and will result in 0.
So 0*6 will give you 0 always.

For having different results you can do-

int b=(int)(Math.random()*a);

Answer 2

This code will return either 0 or 6.
Math random() returns a value between 0 and 1 and multiplying it with 6 and forcing it to integer will return either 0*6=0 or 1*6=6

Answer 3

Thanks ..