How do i find the reciprocal of a number in java?

[mjunit]

hello,

I cant seem to find a way to find the reciprocal of a number in java, any ideas?

For example, finding the reciprocal of 2

Thanks!

[Fubarable]

The problem is likely that you're doing int division. If you divide an int by an int, you'll get an int. For instance:

1/2 will = 0
5/4 will = 1

To fix this, use double. For the inverse of two, you'll want to do one of these:

double invOfTwo = 1.0/2.0;

// or
invOfTwo = (double) 1 / 2;

[CodesAway]

Well, the reciprocal of a number is 1 over that number - e.g. the reciprocal of 2 is 1/2.

You would do this in Java the same way you do it on paper.

double number = 2;
double inverse = 1.0 / number;

Using 1.0 ensures that the result will be a double, even if "number" is an int.