How to move surfaces randomly from a list of surfaces

Grasshopper
1

Ekrano kopija (167)
Ekrano kopija (167)1920×1080 497 KB

I have a lot of surfaces and I want a single surface be randomly placed in y axis compared to other remaining surfaces. To move every single bit of them by using gumball is nonsense.

What is the optimal way to solve this?

2

Here is one way to do it:

image
image1548×518 63.4 KB

random_srf_offset.gh (13.3 KB)

3

thank you, exactly what I have been looking for