r=:0 TEST=:3 :'r=:y+r' TEST"0 ]5#,:i.10 0 1 3 6 10 15 21 28 36 45 45 46 48 51 55 60 66 73 81 90 90 91 93 96 100 105 111 118 126 135 135 136 138 141 145 150 156 163 171 180 180 181 183 186 190 195 201 208 216 225
Does the trick: run TEST on an array. However, a warning: the order of execution is not guaranteed. It is probably much better to implement this using a for. loop. Marshall -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Robert O'Boyle Sent: Sunday, March 13, 2011 10:35 PM To: [email protected] Subject: [Jprogramming] Recursive algorithm Hi Forum I am doing some MCMC work and have been fiddling around with different ways to implement this in J. In my testing, I have a short program, TEST, which adds a number to an existing one, r. r =: 0 TEST =: 3 : 0 r=: y+r ) I'd like to execute TEST many times but always using the last value of r. I can do this by building scripts within scripts but think that there has to be a better way. I tried (TEST"0 i.10) "0 i.5 to execute TEST 5 times but got 0 1 3 6 10 15 21 28 36 45 0 1 3 6 10 15 21 28 36 45 0 1 3 6 10 15 21 28 36 45 0 1 3 6 10 15 21 28 36 45 0 1 3 6 10 15 21 28 36 45 rather than the desired 0 1 3 6 10 15 21 28 36 45 45 46 48 51 55 60 66 73 81 90 90 91 93 96 100 105 111 118 126 135 135 136 138 141 145 150 156 163 171 180 180 181 183 186 190 195 201 208 216 225 Any help would be appreciated Bob ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
