It is late, but I was not sleepy enough, so here is my first translation of the
algorithm to a functional approach...
{- Quote wikipedia: http://en.wikipedia.org/wiki/Longest_increasing_subsequence
L = 0
M[0] = 0
for i = 1, 2, ... n:
binary search for the largest j ≤ L such that
My late night suggestions were nearly correct. I have actually written the code
now. Once keeping track of indices, and a second time without them:
{-# LANGUAGE BangPatterns #-}
-- By Chris Kuklewicz, copyright 2008, BSD3 license
-- Longest increasing subsequence
-- (see
