[Haskell-cafe] Combining sequences

michael rice nowgate at yahoo.com
Sat Apr 4 23:29:34 EDT 2009

Thanks, guys! This one works perfectly.

I was monkeying with similar logic but wasn't sure about syntax.


--- On Sat, 4/4/09, Andrew Wagner <wagner.andrew at gmail.com> wrote:

From: Andrew Wagner <wagner.andrew at gmail.com>
Subject: Re: [Haskell-cafe] Combining sequences
To: "michael rice" <nowgate at yahoo.com>
Cc: haskell-cafe at haskell.org
Date: Saturday, April 4, 2009, 8:56 PM

Here's a pretty straightforward approach:

combine [] ys = ys
combine xs [] = xs
combine (x:xs) (y:ys) | x <= y = x : combine xs (y:ys)
                                  | otherwise = y : combine (x:xs) ys

On Sat, Apr 4, 2009 at 8:40 PM, michael rice <nowgate at yahoo.com> wrote:

Is there a simple way to combine two sequences that are in ascending order into a single sequence that's also in ascending order? An example would be the squares [1,4,9,16,25..] combined with the cubes [1,8,27,64,125..] to form [1,1,4,8,9,16,25,27..].



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