n =. <.@o. 10^50x n 314159265358979323846264338327950288419716939937510 10#.^:_1 n 3 1 4 1 5 9 2 6 5 3 5 8 9 7 9 3 2 3 8 4 6 2 6 4 3 3 8 3 2 7 9 5 0 2 8 8 4 1 9 7 1 6 9 3 9 9 3 7 5 1 0 10#.10#.^:_1 n 314159265358979323846264338327950288419716939937510 This is such a clear example of the power of an inverse of a function ^:_1 it is a shame not to stop a while and appreciate it.
a=:2%:3 a 1.73205 2%:^:_1 a 3 2%:2%:^:_1 a 1.73205 Linda -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Jabran Noor Sent: Monday, March 21, 2011 2:56 AM To: [email protected] Subject: [Jprogramming] Adding up digits in a long number I want to add up the digits in a long 50-digit number. Specifically, my question is 1. How to convert a number into a string... e.g. convert 12324343456456 into a text format. I understand that using *":* works 2. Now, in the output from 1, I want to insert a blank space between each letter. I am struggling to do that. I tried reshaping etc but not getting the desired results. What is one single verb which will do the trick for me. 3. After that I will count the frequency of each number and multiply by the number to get the total - This should not be difficult. Help with 2 would be very useful. Regards ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
