FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 5: Interfaces, Implementations, and Polymorphism

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 31

Multiple Choice

Review LaterAdd Note

Review Later

The design and implementation of a collection class consists of two steps. What is the first step?

A) document the class using docstrings
B) choose an appropriate data structure
C) write the code for the defined methods
D) test the method using sample data

E) All of the above
F) A) and C)

Correct Answer

verified

Show Answer

Question 32

Multiple Choice

Review LaterAdd Note

Review Later

The code for the add method for the ArrayBag class is shown below. What is the missing code? Def add(self, item) : Self.items[len(self) ] = item < missing code >

A) self.items +=1
B) self = self + 1
C) self.size += 1
D) self.len = self.items

E) B) and C)
F) A) and B)

Correct Answer

verified

Show Answer

Question 33

Multiple Choice

Review LaterAdd Note

What is the last step in the remove function in the ArrayBag class?

When Python sees a for loop on an iterable object, it runs that object's __add__ method.

What is found in the body of the method code that is used to document the method?

When Python sees the in operator used with a collection, it runs the __contains__ method in the collection's class.

The logical size of an array-based bag will always be the same as the array's capacity.

When the LinkedBag structure is not empty, self.items refers to the last node in the linked structure.

What is the name of the method that performs the constructor operation for a class?

Which Python function allows you to obtain information about a module, data type, method, or function?