Googling around turned out that sorting it by using UUID’s as a source of random numbers was more easier to implement

To make it clear. Sorting is just putting a set of elements in a particular order. So, by using randomly generated UUID’S we are simply sorting the array by random numbers.

Probably something like this in Ruby :

deck.sort! { #random_guid }


Finally, “more easier” is redundant.

Well, that is beacause my main objective was to find a solution for an Interview question. I needed to find something easy and quick to implement. Probably, I’ll just remove one of it

Modulus isn’t an alternative to random numbers

Thanks. Fixed.

And if you’re worried about the predictability of rand(), use a different RNG (or seed it; presumably you can do that in Ruby). A GUID is basically another random number generator, convert that to a number if nothing else. Usually there are faster generators that work well enough, though, because the GUID enforces additional properties that you don’t care about here and has way too many bits.

Finally, “more easier” is redundant.