Converting NSArray to NSMutableArray [closed]

As above. Would be helpful to know. Thanks!

What is difference between NSArray and NSMutableArray?

The primary difference between NSArray and NSMutableArray is that a mutable array can be changed/modified after it has been allocated and initialized, whereas an immutable array, NSArray , cannot.

What is NSMutableArray?

The NSMutableArray class declares the programmatic interface to objects that manage a modifiable array of objects. This class adds insertion and deletion operations to the basic array-handling behavior inherited from NSArray .

Is NSArray ordered?

An object representing a static ordered collection, for use instead of an Array constant in cases that require reference semantics.

Here are two options:

- (NSMutableArray *)createMutableArray1:(NSArray *)array {     return [NSMutableArray arrayWithArray:array]; }  - (NSMutableArray *)createMutableArray2:(NSArray *)array {     return [[array mutableCopy] autorelease]; }