(iphone) nsarray, nsmutablearray retain/release

Question

this is so basic, but quite not sure how to release array object in object-c.

I know that adding an object to array retains the object.
and removing it from an array releases the object.

When I have an array(mutable or not),
does 'releasing the array itself' also removes objects inside the array(therefore sending release to each object)?
Or should I remove the object first and release the array to reverse the operation (which is retaining array and each object in it).

Thank you

Answer 1

在NSArray或NSMutableArray实例上调用release也会释放其对象，