iphone - Insert 12 objects into NSMutableArray -

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I want to add 12 objects to nsmutablearray, ready for command InsertObject: atIndex:

There < / P> 

  [Self. YouTubeArrayAbject: @ ""] should be a fast way; [Self. YoutubeArray addObject: @ ""]; [Self. YoutubeArray addObject: @ ""]; [Self. YoutubeArray addObject: @ ""]; [Self. YoutubeArray addObject: @ ""]; [Self. YoutubeArray addObject: @ ""]; [Self. YoutubeArray addObject: @ ""]; [Self. YoutubeArray addObject: @ ""]; [Self. YoutubeArray addObject: @ ""]; [Self. YoutubeArray addObject: @ ""]; [Self. YoutubeArray addObject: @ ""]; [Self. YoutubeArray addObject: @ ""];    
 
 
  NSMutableArray * arr = [NSMutableArray arrayWithObjects: @ "" Number: 12 ];

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