Question

what is this piece of code an example of?

class Node (object):

def __init__(self, data, next = None):

self.data = data

self.next = next

head = None

for i in range(1, 6):

head = Node(i, head)

A. Populating a linked stucture

B. Seeing how the linked structures day is

C. Checking for bugs in the code

D. looking through a linked structure

Question

what is this piece of code an example of?

class Node (object):

def __init__(self, data, next = None):

self.data = data

self.next = next

head =

probe = head

while probe != None:

print(probe.data)

probe = probe.next

A. Linked structures are stupid

B. populating a linked structure

C. Looking through a linked structure

D. None of the above.

Question

Each level in a completely filled binary call tree is:

A. the same number of calls as the level about it

B. twice as many calls as the level aboue it

C. is different every level

D. is the same as the level two above and below it

Question

the name self always refers to:

A. the object of the class whose definition includes that use of self

B. not yourself

C. the object of the class is inside of the class of another class

D. the object of the class used when that object was instantiated

Question

The value of the postfix expression 8 9 + 5 *

A.77

B.53

C.85

Question

Example of a queue is:

A. Customers waiting in a checkout line

B.laundry in a hamper

C. a deck of playing cards

Question

Examples of unordered collections are:

A.Queues and Lists

B.Sets and Dictionaries

C.Lists and Dictionaries

Question

Queues are also known as:

A.last in, last out data structures

B.first in, first out data structures

C.last in, first out data structures

Question

What piece of code is missing to get the output?

from collections import OrderedDict

?

ordered_dict1['name'] = "Ali" ordered_dict1['age'] =40 ordered_dict1['nationality'] = "American" ordered_dict1['weight'] = "220 pounds"

print print (ordered_dict1) print

Output: OrderedDict([('name', 'Ali), ('age', 40), ('nationality', 'American'), ('weight', '220 pounds')])

A.OrderedDict() = ordered_dict1

B. ordered_dict1 = OrderedDict()

C. ordered_dict = ordereddict{}

Question

D.Parents

What are these called? Descendants Interiors Roots