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Full Discussion: Sorting in C++..
Top Forums Programming Sorting in C++.. Post 302173176 by WebKruncher on Wednesday 5th of March 2008 11:47:11 PM
Old 03-06-2008
Maps

I think I can help you out, but I might need a better understanding of what you're trying to do. The map class might be what you're looking for. If your not used to templates, the syntax is a bit intimidating, but it becomes clear if you work with the simplest case first. I normally inherit a map base into a custom object like this:

struct CustomMap : map<string,string>
{
} stuff;

stuff["b"]="b";
stuff["a"]="a";
stuff["0"]="0";

See map - C++ Reference

The map sorts by the key ("a1","a2", etc.) and the sort can be customized.

It's easy to iterate through the sorted data set using an iterator. Most of the time I add in an extraction operation so I can dump the sorted list straight to the target.

Hope that helps.
-Jmt
 

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COLLATOR_ASORT(3)							 1							 COLLATOR_ASORT(3)

Collator::asort - Sort array maintaining index association

       Object oriented style

SYNOPSIS
public bool Collator::asort (array &$arr, [int $sort_flag]) DESCRIPTION
Procedural style bool collator_asort (Collator $coll, array &$arr, [int $sort_flag]) This function sorts an array such that array indices maintain their correlation with the array elements they are associated with. This is used mainly when sorting associative arrays where the actual element order is significant. Array elements will have sort order according to current locale rules. Equivalent to standard PHP asort(3). PARAMETERS
o $coll -Collator object. o $arr -Array of strings to sort. o $sort_flag - Optional sorting type, one of the following: o Collator::SORT_REGULAR - compare items normally (don't change types) o Collator::SORT_NUMERIC - compare items numerically o Collator::SORT_STRING - compare items as strings Default $sort_flag value is Collator::SORT_REGULAR. It is also used if an invalid $sort_flag value has been specified. RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 collator_asort(3)example <?php $coll = collator_create( 'en_US' ); $arr = array( 'a' => '100', 'b' => '50', 'c' => '7' ); collator_asort( $coll, $arr, Collator::SORT_NUMERIC ); var_export( $arr ); collator_asort( $coll, $arr, Collator::SORT_STRING ); var_export( $arr ); ?> The above example will output: array ( 'c' => '7', 'b' => '50', 'a' => '100', )array ( 'a' => '100', 'b' => '50', 'c' => '7', ) SEE ALSO
Collator constants, collator_sort(3), collator_sort_with_sort_keys(3). PHP Documentation Group COLLATOR_ASORT(3)
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