sorting of arrays

[Quincy Ntuli]

I understand that perl desides how it stores data in an array.

does it make sense for me to ...

@sorted = sort @list;

RE: sorting of arrays

[David . Wagner]

As default it assumes ascii (alphanumeric data).  So if you have
only numeric data then you need to change to

@sorted = sort {$a <=> $b} @list;

which would sort numerically if needed otherwise will sort as you
want.

Wags ;)
-Original Message-
From: Quincy Ntuli [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, September 04, 2001 05:16
To: [EMAIL PROTECTED]
Subject: sorting of arrays


I understand that perl desides how it stores data in an array.

does it make sense for me to ...

@sorted = sort @list;

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Re: sorting of arrays

[Felix Geerinckx]

on Tue, 04 Sep 2001 12:15:37 GMT, Quincy Ntuli wrote:

> I understand that perl desides how it stores data in an array.

Perl doesn't, you do. Data in an array is indexed by an integer. You, the 
programmer, choses at which position you put your data:

 $array[0] = 0;
 $array[1] = 1;

Or, by using push, you take the next available position:

 push @array, 3;

is the same as
 $array[2] = 2;
 

Perl *does* decide in which order it iterates over the keys of a hash.

-- 
felix

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Re: sorting of arrays

[zanardi2k2]

Felix Geerinckx wrote:

> (...)
> Or, by using push, you take the next available position:
> 
>  push @array, 3;
> 
> is the same as
>  $array[2] = 2;
> (...)


Maybe a typo? 

push @array, 3;

should be the same as 

$array[2] = 3;


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Zanardi2k2

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Re: sorting of arrays

[Felix Geerinckx]

on Thu, 05 Sep 2002 08:46:08 GMT, [EMAIL PROTECTED] 
(Zanardi2k2) wrote:

> Felix Geerinckx wrote:
>
>>  push @array, 3;
>> 
>> is the same as
>>  $array[2] = 2;
>> (...)
> 
> 
> Maybe a typo? 
> 
>  push @array, 3;
> 
> should be the same as 
> 
>  $array[2] = 3;

Indeed. Thanks for spotting it.

-- 
felix

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