euler/euler014.hs 877d83e622ab4371bdf7f0aceee676937b501fb5 Vineet Kumar vineet@doorstop.net http://github.com/vin/challenge/commit/8862b2e587ced8cc90e9fcb0d626b60f59215f48 8862b2e587ced8cc90e9fcb0d626b60f59215f48 2009-01-04T12:16:45-08:00 2009-01-04T12:16:45-08:00 add a solution for euler problem 14 (collatz). There are a few different approaches here: the naive using maximumBy (comparing.length.collatz) -> stack overflow same thing using a custom maximumBy', which uses foldl', for strict evaluation -> runs, but takes 100s using snd . max (length &&& id) -> runs in 12s, but I don't really understand why this is so much better than the above. adb9b494fd8f98f62d1d18c06088d1e6f8e5f1b6 Vineet Kumar vineet@doorstop.net