Message Boards Message Boards


Functional approach to the Babbage squares challenge ?

Posted 6 months ago
0 Replies
0 Total Likes


I solved the Babbage squares problem, but it was very painful and my code is embarrassingly ugly.

My first approach was functional, but it was too slow. I basically created all possible tuples and filtered them with transpose@# == # &. I thought it was elegant, but again, too slow.

It occurred to me that in order to improve performance I had to perform the tests progressively, that is at each Cartesian product, not only at the end. I'm pretty sure I know how I could do it with procedural programming. I would use three (since we know the first word) For loops with conditional Continue instructions in each of them. I am confident that would work, but I really want to learn functional programming and I struggle to find the FP equivalent.

I'm not asking for the solution, but can anyone give me a hint of the correct FP approach for this kind of problem?

Reply to this discussion
Community posts can be styled and formatted using the Markdown syntax.
Reply Preview
or Discard

Group Abstract Group Abstract