That's a bit convoluted. How about:
srandom(time(NULL));
array = [[NSMutableArray alloc] init];
while ([array count] < 15)
{
int randomNo = random() % 15 + 1; // Gives biased results, by the
way
NSNumber numberToAdd = [NSNumber numberWithInt: randomNo];
if (![array containsObject: numberToAdd])
{
[array addObject: numberToAdd];
}
}
(Written in mail and not compiled or tested).
On 6 Aug 2009, at 13:08, Mahaboob wrote:
Yeah, you are right.
I did my own code and is working well for me.
My code is :
srandom(time(NULL));
BOOL val;
val = FALSE;
array = [[NSMutableArray alloc]initWithCapacity:15];
firstNo = random()%15+1;
[array addObject:[NSNumber numberWithInt:firstNo]];
for(i=1;i<15;i++){
firstNo = random()%15+1;
for(j=0;j<[array count];j++){
if((firstNo == [[array objectAtIndex:j]intValue] )){
i--;
val = TRUE;
break;
}
}
if(val){
val = FALSE;
continue;
}
else{
[array addObject:[NSNumber numberWithInt:firstNo]];
}
}
Thanks
On 8/6/09 1:50 PM, "Alastair Houghton" <alast...@alastairs-
place.net> wrote:
On 6 Aug 2009, at 05:59, Mahaboob wrote:
Thanks.
It is working well.
I'll say again, off-list, you probably don't want to use Agha Khan's
code; it generates biased results, which are bad in almost all
applications. Take a look at the Wikipedia article I pointed you at,
here, for (a) an algorithm that works, and (b) some notes on
generating random numbers:
<http://en.wikipedia.org/wiki/Knuth_shuffle>
Kind regards,
Alastair.
--
http://alastairs-place.net
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