- NSMutableArray新增
addObject - NSMutableArray 移除
removeObject/removeObjectAtIndex - 排序
(tbd) - 二維陣列用兩個 NSArray/NSMutableArray 來組成,參考
http://stackoverflow.com/questions/3261329/how-to-create-a-2d-nsarray-or-nsmutablearray-in-objective-c
http://stackoverflow.com/questions/2583710/how-to-simplify-my-code-2d-nsarray-in-objective-c - 承上,也可以用 NSArray/NSMutableArray 搭配 NSDictionary/NSMutableDictionary 來組成。