in reply to Puzzle: Longest Increasing Sequence

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Re^2: Puzzle: Longest Increasing Sequence
by ivancho (Hermit) on Apr 16, 2006 at 18:54 UTC
    that's exponential, unfortunately. Try it on a sorted array, and you'll end up going through all possible subsequences.

    Update: not to mention that you'll run out of memory on a list longer than 20 elements..