You need to use some kind of cache for computed data. Should be possible with and without recursion (memoization)

hey i'm a n00b and am wrapping my head around this...quick question...is this a problem where recursion would be more efficent at solving?

So I've got a question here about the test cases...I re-read the kata and my initial solution was to sum the different arrays and if they are == then it's True. Everything passed in the tests but am wondering if this test should be included.

Test.assert_equals(same([[5,5],[0,2]], [[7,3],[1,1]]), False, "Values that sum the same but are different")