Python help. 15) 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 a. self.items +=1 b. self.len = self.items C. self = self + 1 d. self.size += 1 16) What word is best defined as the use of common names for operations on different types of collections? a. anachronism b. polymorphism C. concatenation d. modularization 20) When a programmer calls the next function on an iterator object, what happens if there is no current item in the sequence? a. a Stoplteration exception is raised b. the compiler generates an error C. the previous item is returned d. the None item is returned 22) Consider the following program: class Animal: def __init__(self, name="Dog"): self._name name def getName(self): print(self._name) class Dog(Animal): def __init__(self,name): super().__init__("Cat") dog Dog("Dog") dog.getName() What is displayed when it executes? a. Dog b. ldogl c. Cat d. Nothing is displayed e. The program crashes
Python help. 15) 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 a. self.items +=1 b. self.len = self.items C. self = self + 1 d. self.size += 1 16) What word is best defined as the use of common names for operations on different types of collections? a. anachronism b. polymorphism C. concatenation d. modularization 20) When a programmer calls the next function on an iterator object, what happens if there is no current item in the sequence? a. a Stoplteration exception is raised b. the compiler generates an error C. the previous item is returned d. the None item is returned 22) Consider the following program: class Animal: def __init__(self, name="Dog"): self._name name def getName(self): print(self._name) class Dog(Animal): def __init__(self,name): super().__init__("Cat") dog Dog("Dog") dog.getName() What is displayed when it executes? a. Dog b. ldogl c. Cat d. Nothing is displayed e. The program crashes
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Types of Linked List
A sequence of data elements connected through links is called a linked list (LL). The elements of a linked list are nodes containing data and a reference to the next node in the list. In a linked list, the elements are stored in a non-contiguous manner and the linear order in maintained by means of a pointer associated with each node in the list which is used to point to the subsequent node in the list.
Linked List
When a set of items is organized sequentially, it is termed as list. Linked list is a list whose order is given by links from one item to the next. It contains a link to the structure containing the next item so we can say that it is a completely different way to represent a list. In linked list, each structure of the list is known as node and it consists of two fields (one for containing the item and other one is for containing the next item address).
Question
Python help.
15) 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
a. self.items +=1
b. self.len = self.items
C. self = self + 1
d. self.size += 1
16) What word is best defined as the use of common names for operations on different types of collections?
a. anachronism
b. polymorphism
C. concatenation
d. modularization
20) When a programmer calls the next function on an iterator object, what happens if there is no current item in the sequence?
a. a Stoplteration exception is raised
b. the compiler generates an error
C. the previous item is returned
d. the None item is returned
22) Consider the following program:
class Animal:
def __init__(self, name="Dog"): self._name name
def getName(self):
print(self._name)
class Dog(Animal):
def __init__(self,name):
super().__init__("Cat")
dog Dog("Dog")
dog.getName()
What is displayed when it executes?
a. Dog
b. ldogl
c. Cat
d. Nothing is displayed
e. The program crashes
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