## Re: Aw: Re: Aw: Re: [stella] Sorting Algorithms.

 Subject: Re: Aw: Re: Aw: Re: [stella] Sorting Algorithms. From: Erik Mooney Date: Mon, 25 Mar 2002 11:52:19 -0500
```3/25/2002 11:09:16 AM, Greg Miller <gmiller@xxxxxxxxxxxxxxxxx> wrote:

>> 3/25/2002 9:18:01 AM, cybergoth@xxxxxxxx wrote:
>> Careful here - Classic sorting algorithms are usually defined as
>> speed being the number of swaps required.  In tightly timed
>> 6502 assembly language, the comparisons and looping take a
>> quite significant amount of time already.  In the example
>> of 7, 1, 2, 3, 4, 5, 6, you require n^2 comparisons (actually
>> (n-1)^2) to get the 7 to the end of the list.
>
>
>Actually, the classic bubble sort implementation requires 6 comparisons
>to get the 7 into the proper place, then one more pass to notice that
>the data is now in sorted order. You compare 7 to 1 and swap it, then 7
>to 2, then 7 to 3, etc.

Actually, you're right.  But in the reverse case - 2, 3, 4, 5, 6, 7, 1
- it would take n^2 comparisons although only n swaps.

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