This is more of a maths/general programming question, but I am programming with PHP is that makes a difference.
I think the easiest way to explain is with an example.
If the range is between 1 and 10.
I want to generate a number that is between 1 an 10 but is more likely lower than high.
The only way I can think is generate an array with 10 elements equal to 1, 9 elements equal to 2, 8 elements equal to 3…..1 element equal to 10. Then generate a random number based on the number of elements.
The trouble is I am potentially dealing with 1 – 100000 and that array would be ridiculously big.
So how best to do it?
Generate a random number between 0 and a random number!