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From Thomas Fischer <Fisc...@seitenbau.net>
Subject RE: SortedMap in reverse order
Date Mon, 19 Jul 2004 08:00:35 GMT




Hi Veronique,

you have to use the constructor TreeMap(Comparator c) contructor and
provide a comparator implementation which sorts the key in the right order.

  Thomas

P.S. :A small hint: as this is not a torque-related question, you are lucky
to get this question answered here.


Veronique Couderc <veroniquec@sensorynet.co.uk> schrieb am 16.07.2004
18:25:20:

>
> Hi,
>
> Do you know how to use SortedMap in a descending order?
>
>
> This prints the elements in ascending order:
>
>    SortedMap sortedMap = new TreeMap();
>    sortedMap.putAll(ht);
>    Iterator iter = sortedMap.keySet().iterator();
>    while (iter.hasNext())
>    {
>       String key = (String)iter.next();
>       out.println(sortedMap.get(key));
>
>    }//end while
>
>
> I found this on the net but can't make it work:
>
> Creates a reversed version of this map.
> Must be <code>O(n)</code>, where <code>n</code> is the number
of
> elements in this collection.
> @return  A map with the elements in reverse order.
> public abstract SortedMap reversed();
>
> Many thanks
> vero
>
>
>
>
> --
> Regards
>
> Veronique Couderc
> SensoryNet Ltd, London
>
> t. 0845 226 3012
> f. 0845 226 8512
>
>
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