Two different passwords can be set for a file

When processing a stack:

a. Additions are at one end and deletions are at the other end. b. Additions and deletions are both at the same end. c. Additions are at the top and deletions are at the bottom. d. Additions are at the bottom and deletions are at the top.

Create a class to represent a Rectangle.

Your class should contain instance variables for length and width, as well as member method to calculate the area and perimeter.