Marketing of D - article topic ideas?

Andrei Alexandrescu SeeWebsiteForEmail at erdani.org
Tue Jun 8 15:16:49 PDT 2010


On 06/08/2010 04:53 PM, Simen kjaeraas wrote:
> Simen kjaeraas <simen.kjaras at gmail.com> wrote:
>
>> Andrei Alexandrescu <SeeWebsiteForEmail at erdani.org> wrote
>>
>>> max of n elements is O(n).
>>
>> T max( T )( T[] values ) {
>> T result = values[0];
>> foreach ( i, e; values[1..$] ) {
>> if ( max( values[i+1..$] ) > result ) {
>> result = max( values[i+1..$] );
>> }
>> }
>> return result;
>> }
>
> Better:
>
>
> T max( T )( T[] values ) {
> if ( values.length == 1 ) {
> return values[0];
> } else {
> return max( values[0..values.length/2] ) > max(
> values[values.length/2..$] ) ? max( values[0..values.length/2] ) : max(
> values[values.length/2..$] );
> }
> }
>

I'm not sure I understand the point. Could you please elaborate?

Andrei


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