27 Nov
2007
27 Nov
'07
5:34 p.m.
Henning Thielemann wrote:
apfelmus wrote:
Back then, I was given the task to calculate some sequence of numbers which I did in one page of C code. So far so good, but when I asked the task assigner about his solution, he responded: "Ah, this problem, that's 1 line in Haskell. Well, 2 lines if the terminal is too small."
Ah, a Haskell code contribution to the Encyclopedia of Integer Sequences?
The task was just for fun, but it's sequence A050000. import Data.Set xs = let f x m = x:let y = x `div` 2 in f (if member y m then 3*x else y) (insert x m) in f 1 (singleton 0) As said, it's two lines if the terminal is too small :) Regards, apfelmus