Ascending & Descending Order

 NSArray *number =@[@9,@3,@6,@7];

    

    NSLog(@"%@",number);

  

   NSArray  *ascending = [number sortedArrayUsingSelector: @selector(compare:)];

    NSLog(@"%@",ascending);

    NSArray *decending = [[[number sortedArrayUsingSelector:@selector(compare:)] reverseObjectEnumerator] allObjects];

    NSLog(@"%@",decending);

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