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Today's Topics:
1. Efficient Binary Multiplication (Quentin Liu)
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Message: 1
Date: Sat, 14 Apr 2018 16:28:55 -0400
From: Quentin Liu <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: [Haskell-beginners] Efficient Binary Multiplication
Message-ID: <2cd382a0-b5be-4eed-a0c0-e25d2045031d@Spark>
Content-Type: text/plain; charset="utf-8"
Hi all,
Suppose I want to multiply two binary numbers whose representation uses lists
(e.g. 14 is represented as [1, 1, 1, 0]). Is there any efficient way to do
binary multiplication? The way I could come up with involves a lot of
intermediate lists that will be discarded eventually and is extremely
inefficient. I know one fast algorithm that uses Array but would it be possible
to do the multiplication with only lists?
Regards,
Qingbo Liu
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