I think you should change your description to "I am trying to find out which integers in y contain no other digits than x"
I am also going to imagine that Thomas Bulka's proposed result is correct here. Experimenting with this, one of the issues is efficiency and 0 as a digit. Since 0 is used for padding, if 0 is not an element of x, we're going to have to break the integers in y into digits independently to avoid problems with padding. And, I guess 10&#.inv&.> is one way of accomplishing that. The other thing is how do we detect extra digits. The first approach which occurs to me would be to use -.L:0~ In other words, this is almost a useful result: 1 3 5(-.L:0~ 10&#.inv&.>) 5311 10531 536 1111111 ++-+-++ ||0|6|| ++-+-++ To make it useful we could add a test for 0 being the shape of each of those vectors. For example; 0= #@> 1 3 5(-.L:0~ 10&#.inv&.>) 5311 10531 536 1111111 1 0 0 1 There's more that could be done here. For example, the first thing I wanted to do was turn both x and y into bit lists (one bit for each digit in a representation of x and in the last dimension of a representation of y), But, I imagine that this is useful enough, and should be enough to get you started. FYI, -- Raul On Sat, Aug 26, 2023 at 6:31 AM Richard Donovan <rsdono...@hotmail.com> wrote: > > I am trying to find out whether a series of integers y only contain a set of > integers x > > That is, 1 3 5 verb 5311 10531 536 1111111 > should return 1 0 1 1 > > NB. only 1 3 5 occur in 5311 > NB. not only 1 3 5 occur in 10531 > NB. not only 1 3 5 occur in 536 > NB. only 1 3 5 occur in 1111111 > > NB. x only contains digits 0-9 without repeat. #x is max 10 > NB. leading zeros should be ignored in elements of y. No max for #y > > I have tried several methods using combinations of e. i. under< etc. but > haven't yet found a succinct verb that achieves what I want. > > I hope my description is clear > > Help gratefully received! > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
