Array combinations

#1

Hello,

Is there a way to get all combinations of an array of 3 items, whose value is 0 or 1 ?

For instance, for an array of 3 items, it should generate the arrays below :

[ [0,0,0], [1,0,0], [0,1,0], [0,0,1], [1,1,0], [1,0,1], [0,1,1], [1,1,1] ];

Many thanks,
Christophe

#2

allTuples([0,1]!3)

You can also check ‘enum’ from miSCellaneous_lib quark with a lot of enumeration options, above would be

3.enum([0,1])

#3

if all you want is that output, then i’d say that line works quite well. :slight_smile:

it sounds like you are trying to make something more generic, though. do you want all arrays of size n, not just 3? for example.

#4

Yes, exactly, I’m looking for all arrays of size n, I could define as an argument.

Thanks,

Christophe

#5

That’s kinda what functions are for.

So if you have allTuples([0,1]!3) and you want 3 to be parameterized:

f = { |n = 3| allTuples([0, 1] ! n) };

To parameterize the possible values, I’ll leave that “as an exercise for the reader” (as math texts used to say).

hjh