Java generate random double between exclusive starting range and inclusive ending range-CodePudding

double num = min   Math.random() * (max - min);

This creates random double between [min, max). I would like to create random double between (min, max].

I have seen an approach that generates integers between [min, max], but the number here is integer and the starting range is inclusive.

CodePudding user response：

double num = max - Math.random() * (max - min);

This will produce numbers whose upper limit, max is inclusive, but whose lower limit, min is exclusive, because max is returned when Math.random() returns zero.

CodePudding user response：

If you would like you could use ThreadLocalRandom#nextDouble(double, double) to produce the desired results.

CodePudding user response：

Try this:

double num = (min   Math.random() * (max - min))   1;