sorting

[terry oliver]

what is the best way to sort three double variables in ascending order

thanks Olly

[Rob Spoor]

Depends what your definition of best is. Also, you must consider what to do when any of the doubles is NaN - that will not compare to anything.

Fast method:

double max = Math.max(d1, Math.max(d2, d3));
double min = Math.min(d1, Math.min(d2, d3));
double center = d1 < d2
                    ? d2 < d3 ? d2 : Math.max(d1, d3)
                    : d1 < d3 ? d1 : Math.max(d2, d3);

There is a more generic method however, for any number of (non-NaN) numbers:

double[] array = {...}; // any numbers you want excluding NaN
Arrays.sort(array);

[arulk pillai]

SCJP 1.4 100%

Good stuff.

[Rob Spoor]

Thank you. I think I got lucky on a few questions though.