1. (int) (Math.random( ) * 21) – 10 2. All the methods are constant time except for remove, grab, countOccurrences, and clone (all of which are linear); the addAll method (which is O ( n ), where n is...

1. (int) (Math.random( ) * 21) – 10

2. All the methods are constant time except for remove, grab, countOccurrences, and clone (all of which are linear); the addAll method (which is
O(n), where
n
is the size of the addend); and the union method (which is O(m+n), where
m
and
n
are the sizes of the two bags).