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NNTP-Posting-Date: Tue, 01 May 2012 14:17:15 -0500
Date: Tue, 01 May 2012 12:17:17 -0700
From: Patricia Shanahan <pats@acm.org>
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Subject: Re: Help with program
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On 5/1/2012 12:12 PM, glen herrmannsfeldt wrote:
> Patricia Shanahan<pats@acm.org>  wrote:
>> On 5/1/2012 10:31 AM, mbuenik5@yahoo.com wrote:
>>> I need help writing a Java method named swap that takes an integer
>>> array and two indexes. The method then swaps the integers at those two
>>> indexes. The return type for swap is void. Can anybody write this out?
>
>> I'm sure any who knows Java beyond the extreme beginner level can write
>> it out. Have you considered the possibility that the objective is to get
>> you to work out how to do it yourself? That seems likely to me.
>
> It is usual that you can get help if you have actually tried,
> and show what you have and haven't got working.
>
> For extra challenge, try doing it without any temporary/local variables.

I strongly recommend against this, in favor of doing it as simply,
cleanly and directly as possible.

There are, very rare, situations in which local variables are expensive,
and there are some clever tricks for doing without them in various
situations. This is not one of those situations.

Patricia