title: how to add object multi NSArray in one NSMutableArray
body: <p>I want add object from 2 NSArray to NSMutableArray. I dont know about this.</p>
  
  <p>this my code:</p>
  
  <pre><code>@interface ViewController : UITableViewController
  {
      NSArray *animal;
      NSArray *color;
      NSMutableArray *all;
  }
  
  
  @implementation ViewController
  
  - (void)viewDidLoad
  {
      [super viewDidLoad];
  
      animal = [[NSArray alloc]initWithObjects:@"Lion",@"Tiger",@"Dog",@"Cat",@"Sheep",@"Wolf", nil];
      color = [[NSArray alloc]initWithObjects:@"Blue",@"Red",@"Yellow",@"Green",@"Black", nil];
  
      all = ??? ; //how to add object from animal and color array in all 
  }
  </code></pre>