8 Jun
2017
8 Jun
'17
4:20 p.m.
Dear Murad, On Thu, Jun 08, 2017 at 04:03:55PM +0300, Mahmoud Murad wrote:
I have the following problem, I want to randomly generate arithmetic expressions based on a number, for example: if I have n = 3, then the expression must have 3 operators like this (4)*(((3+5)-2)).
Mark Dominus, well-known in the Perl community, likes this puzzle so much that he collected several solutions and nonsolutions on his blog (which I warmly recommend). He also lists several Haskell solutions: http://blog.plover.com/math/24-puzzle.html Ideas for further optimizations of the Haskell solutions (regarding clarity, elegance, and length of the code) are very much welcome: https://gist.github.com/iblech/e21b0a2f5a6e0184ba43c3b1e0e70337 Cheers, Ingo