B4R Code Snippet Random number between X and Y

There are many code snippets on the forum for random numbers. This example is for a project Im doing that needs to randomly select 1 of 4 LED's. Im not too worried that its pseduo random but this code will get you a random number between 1 and 4 (but makes sure you dont get the same number twice in a row).

NOTE the upper limit is exclusive so for random numbers beween 1 and 4 we use 1 & 5. If you wanted a number between 2 and 6 you'd use 2 & 7.

Dim rNumber As Byte = 0 RunNative("getRandomNoDuplicate", Null) Log("rNumber = ", rNumber)

#if C int prevValue = -1; int lower = 1; int upper = 5; void getRandomNoDuplicate(B4R::Object* o) { static int offset = 0; int randNumber = random(lower, upper); if (prevValue == randNumber) { offset++; if (offset >= upper - lower) offset = 1; randNumber += offset; if (randNumber >= upper) randNumber = lower + randNumber - upper; } prevValue = randNumber; b4r_main::_rnumber = randNumber; } #End If