Question

I have an NSMutableArray. I have synthesized it as well. I am adding objects to it from a method by xml extraction of some file names etc. Now in my array there is the occurrence of same elements multiple times. I need to eliminate the multiple objects and get only unique ones. How can this be done? I tried the code below but then there arise some errors.

NSString *AName = [CompleteFileName_string1 substringWithRange:ArtistRange];  
[array_artist addObject:AName];
for(int i=0; i < [array_artist count]; i++)
{
    if([[array_artist objectAtIndex:i] isEqualToString:[array_artist objectAtIndex:i+1]])
    {
        [[array_artist objectAtIndex:i+1]=NULL];
    }
    else
    {

    }
}

EDIT*** i need to eliminate by ignoring case sensitivity too…

Answer 1

Take a tempArray as golbally

When you are adding objects from XML you have to just check

NSString *upCaseString=[stringFromXML uppercaseString];

if(![tempArray containsObject:upCaseString]) {    
    [array_artist addObject:stringFromXML]; 

    [tempArray addObject:upCaseString];
}