NSMutableArray * array1;
    NSMutableArray * array2;

    array1 = [[NSMutableArray alloc]init];
     array2 = [[NSMutableArray alloc]init];


    [array1 addObject:@"1"];
    [array1 addObject:@"2"];


    [array1 addObject:@"1"];
    [array1 addObject:@"2"];
    [array1 addObject:@"3"];





           NSSet *set1 = [NSSet setWithArray:array1];
    NSSet *set2 = [NSSet setWithArray:array2];

   if([set2 isEqualToSet:set1])
   {
       NSLog(@"result %@", set1 );
        NSLog(@"result %@", set2 );

   }
    else
    {
        NSLog(@"result %@", set1 );
        NSLog(@"result %@", set2 );
    }