Like this? (],&.|:~[: (]$[:i.*/) [:}:$) a 0 0 1 1 2 3
2 4 5 3 6 7 (],&.|:~[: (]$[:i.*/) [:}:$) i. 2 3 4 0 0 1 2 3 1 4 5 6 7 2 8 9 10 11 3 12 13 14 15 4 16 17 18 19 5 20 21 22 23 On Sat, Jan 30, 2010 at 8:43 PM, David Ward Lambert <[email protected]>wrote: > NB. Write a function to number the rows of its argument. > NB. Example: `a' is an n-dimensional numerical array. > ]a =. i.3#2 > 0 1 > 2 3 > > 4 5 > 6 7 > > NB. NumberRows a > NB. 0 0 1 > NB. 1 2 3 > NB. > NB. 2 4 5 > NB. 3 6 7 > NB. > NB. I created this pretty length error: (i.*/}:$a),"0 _1 a > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- Devon McCormick, CFA ^me^ at acm. org is my preferred e-mail ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
