Is there an algorithm to find unique combinations of 2 lists? 5 lists?

Question

I have N Lists I\'d like to find unique combinations of. I\'ve written it out on my whiteboard and it all seems to have a pattern, I just haven\'t found it

Answer 1

You're looking for the Cartesian product. In Python, if you want tuples:

c = [(x, y) for x in a for y in b]
r = [(vv, ww, xx, yy, zz)
     for vv in v  for ww in w  for xx in x  for yy in y  for zz in z]