1. Complete the tree-based implementations of sorted sets and sorted dictionaries and test them with an appropriate driver program. 2. Add an issubset method to the sets module. This method returns...

1. Complete the tree-based implementations of sorted sets and sorted dictionaries and test them with an appropriate driver program.

2. Add an issubset method to the sets module. This method returns True if the set on which it is called is a subset of the argument set, or False otherwise.