Hi all- Here's a little problem (not a homework assignment) that has me stumped.
Take two rank 1 arrays: repeats =: 1 2 3 4 values =: 13 14 15 16 and want to repeat values such that the result is this rank 1 array: 13 14 14 15 15 15 16 16 16 16 I've gotten as far as: > times =: dyad : ', y"0 i. x' "0 > 1 2 3 4 times 13 14 15 16 > 13 0 0 0 > 14 14 0 0 > 15 15 15 0 > 16 16 16 16 But it's the wrong rank and has been filled. And it might be really awful J as well. Any pointers greatly appreciated. I've been reading mostly _J for C_, but perhaps I should be looking at something else. Next step after this is to repeat arrays of unequal length: repeats =: 1 2 3 4 values =: 13 14 result =: 13 14 14 13 13 13 14 14 14 14 and vice versa. Best wishes, Charles ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
