Random numbers from range / random numbers from given numbers

[sant0s81]

Hi,

fit01(rand(detail("../foreach_begin1_metadata1/", iteration, 0 )+seed),1,53)

gives me a random number between 1 till 53.

But what do I have to use, if I want instead of  a random number between 1 and 53 a random number of given numbers? Something like '1,2,3,4,5,10,15,45,70,71,72,85, etc...' and than randomize them?

Thanks

Edited June 8, 2020 by sant0s81

[Aizatulin]

Hi,

you can define an array, which contains all number you want generate. Now fit a 0-1 random float value to (0,len(array)) and use the truncated value as index for the array.

random_array.hipnc

[Noobini]

here's my read of the question, given a bunch of ints....randomize their order.

I've implemented the Fisher Yates Shuffle. The detail attribute is so you can see it in geo spreadsheet, is all, it could just be simple temporary array in some wrangle

vu_FisherYateShuffle.hiplc

[Noobini]

with seed.

also spotted an error, the j should mult with i not max !!!

 

vu_FisherYateShuffle2.hiplc

Edited June 9, 2020 by Noobini

[sant0s81]

@Aizatulin and @Noobini

thank you, some great examples again!