I came to this solution, which happens to be a transliteration of the problem's formulation: >./ */"1 ".items"1(13,\number) where «numero» is the string with the number's digits (one thousand).
Please note I'm no programmer, and I'm learning a little J with no other intent than just for curiosity. Before proceeding into another Problem, I would like to modify the solution above in order to avoid multiplying groups that contain noughts. With iteration it would be something like instead of ".items"1 (13,\number), build the table ignoring _increasing some counter that refers to position_ those subarrays that contains a zero and the next few rows, where few is 13 minus the position of the last zero counted, until the end of number is reached. Is something alike that expressible with J? Can you give me some hints? Best regards, Marce ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
