Distinct Item

ar=[[NSArray alloc]initWithObjects:@"sachin",@"saurav",@"dada",@"dhoni",@"viru",@"raina",@"morkel",@"cricket",@"saurav",@"sachin",@"badri",@"yuvi",@"bhajji",@"gauti",@"umesh",@"yusuf",@"gauti", nil];

     //arr1=[[NSArray alloc]initWithObjects:@"sachin",@"saurav",@"dada",@"dhoni",@"viru",@"raina",@"morkel",@"cricket",@"saurav",@"sachin",@"badri",@"yuvi",@"bhajji",@"gauti",@"umesh",@"yusuf",@"gauti", nil];

    crt=[[NSMutableArray alloc]init];

//Display Repeated Items only

- (IBAction)click:(id)sender {

    for(int i=0;i<[ar count];i++)

    {

        for(int j=i+1;j<[ar count];j++)

        {

            if([[ar objectAtIndex:i] isEqualToString:[ar objectAtIndex:j]])

            {

                [crt addObject:[ar objectAtIndex:i]];

                break;

            }

        }

    }

    for (int i=0; i<[crt count]; i++) {

    label1.text=[ label1.text stringByAppendingString:[NSString stringWithFormat:@"%@ \n",[crt objectAtIndex:i]]];

    }

}

//Display Without repeated Item

- (IBAction)distinct:(id)sender {

    NSArray *a2 = [[NSOrderedSet orderedSetWithArray:ar] array];

    for (int a=0; a<[a2 count]; a++)

    {

         label2.text=[label2.text stringByAppendingString:[NSString stringWithFormat:@"%@ \n",[a2 objectAtIndex:a]]];

    }

}