In this exercise, you will get some practice with the __add__ method by implementing it for a class called ContactBook. This class represents a collection of names and phone numbers. ContactBook stores its information as a dictionary, where the key is a name and the value is a phone number or group of phone numbers. The keys and values in this dictionary are stored as strings. When printed, a ContactBook might look like this:
Answer:
class ContactBook():
def __init__(self):
self.contacts ={}
def __repr__(self):
return str(self.contacts)
def add_contact(self,name,number):
self.contacts[name] = number
def __add__(self, other):
new_contact = ContactBook()
other_contact = other.contacts.keys()
for name,num in self.contacts.items():
if name in other_contact:
new_contact.add_contact(name,num or other_contact[name])
else:
new_contact.add_contact(name,num)
for name,num in other.contacts.items():
if name not in self.contacts:
new_contact.add_contact(name, num)
return new_contact-
cb1 = ContactBook()
cb2 = ContactBook()
cb1.add_contact('Jonathan','444-555-6666')
cb1.add_contact('Puneet','333-555-7777')
cb2.add_contact('Jonathan','222-555-8888')
cb2.add_contact('Lisa','111-555-9999')
print(cb1)
print(cb2)
cb3 = cb1+cb2
print(cb3)
Explanation:
The ContactBook class holds the contact details of an instance of the class. The class has three magic methods the '__repr__', '__init__', and the '__add__' which is the focus of the code. The add magic method in the class adds the contact book (dictionary) of two added object instance and returns a new class with the contact details of both operand instances which is denoted as self and other.
A system administrator at Universal Containers created a new account record type. However, sales users are unable to select the new record type when creating new account records. What is a possible reason for this? (Choose 2)
Explanation:
We have these reasons below as the
The reason why sales users are not able to select the new record type while they are trying to create a new account:
1. The users profile does not contain the record type yet. That is, this record type has not been added to the profile of the sales user.
2. This record type is yet to be activated.
Mobile cameras are now of a higher quality than when they first arrived on the market. Describe the difference in
resolution that has come about and how that has led to higher photo quality.
Answer:
When mobile cameras first arrived on the market, they did not have a high-quality resolution. But after the years, mobile cameras are able to record a significant amount of digital information.
Twenty years ago, most games were sold in brick and mortar stores. How did independent game developers get their games into these stores?
Question 18 options:
by working with a crowdfunding specialist who would give developers funds to offer to retailers if they promised to sell the game
by working with a piracy specialist who would ensure the game was distributed to each and every retailer, regardless of licensing
by working with a retail specialist who distributed video games to consumers
by working with a publisher who would help the developer bring their games to stores and then market them and get as much exposure and traction as possible
Answer: by working with a publisher who would help the developer bring their games to stores and then market them and get as much exposure and traction as possible
Explanation:
Publishers were and are still important in the gaming world even if they have now increasingly moved online. Publishers have a reputation and with this reputation comes access to a wide array of services that enable them to sell games.
This was the same when most stores were brick and mortar. One would sign a deal with a publisher who through their expertise would help the game get to market and give it publicity so that it can be sold.
While setting up a computer on the network, you use 'ipconfig' and see that the IP address is currently 10.24.16.160, with subnet mask 255.255.255.192. Where did the IP address likely come from?
Answer:
Explanation:
The IP address either came from your router or your Internet Service Provider (ISP). Sometimes ISP's automatically assign every device under their network an IP address, while other times they allow each individual's home network router to determine the IP of every connected device. This router can either assign an automatic IP address to each device from a range of addresses or the IP address can be assigned manually to each device as static.
If you have an array of 100 sorted elements, and you search for a value that does not exist in the array using a binary search, approximately how many comparisons will have to be done?
a)7
b)100
c)50
Answer:
50
Explanation:
as binary search will search the array by dividing it into two halves till it find the value.
Write a method intersect that accepts two sorted array lists of integers as parameters and returns a new list that contains only the elements that are found in both lists.
Answer:
Explanation:
The following code is written in Java. It creates a function called equalElements that takes two ArrayList of integers as parameters loops through both of them to find the elements that are equal in both and then adds those elements to a new ArrayList called repeated. Then the ArrayList is returned to the user.
public static ArrayList<Integer> equalElements(ArrayList<Integer> arrOne, ArrayList<Integer> arrTwo) {
ArrayList<Integer> repeated = new ArrayList<>();
for (int x: arrOne) {
for (int i: arrTwo) {
if (x == i) {
repeated.add(x);
break;
}
}
}
return repeated;
}
-(-13) P binary using signed. 2's complement representation
Perform the arithmetic operations (+42) + (-13) and (-42)
negative .
Consider the balloon
Answer:
00011101
00011101
Explanation:
Given the following arithmetic operations
a) (+42) + (-13)
b) (-42) - (-13)
From (a):
We need to convert +42 into binary, so we get = 00101010
Now for +13, when it is converted into binary, we get = 00001101
But, here, the 13 is negative. So, here is what we will do, we will have to take the two compliment of the binary. After doing that, we get = 111110011
∴
+ 42 → 00101010
- 13 → 1 1 1 10011
+29 000 11101
Thus, the arithmetic operation after we use 2's complement is 00011101
b)
Here both 42 and 13 are negative. Using two complement representation
-42 is first converted to binary as 00101010, Then → 11010101 + 1 = 11010110
-13 is converted to binary as 00001101 → 11110010 = 11110011
In between, a negative sign exists, so we take another 2's complement.
i.e.
11110011 → 00001100 + 1 = 00001101
- 42 → 1 1 01 0110
+13 → 00001 101
-29 1 1 1 00011
since there is no carry, we take two's complements for the result as:
1 1 1 00011 →00011100 + 1 = 00011101
You have booted a new computer (purchased from a manufacture) to PowerShell prior to the computer starting the Out-of-Box Experience. From PowerShell, you run the Set-ExecutionPolicy Unrestricted cmdlet. What is the function of this cmdlet?
Answer:
It allows Windows to run script files.
Explanation:
A cmdlet is an abbreviation for command-let and it is a special type of lightweight command that is typically used with the Microsoft Windows PowerShell script for the automatic performance of a single-specific function on a computer system.
In this scenario, you have booted a new computer (purchased from a manufacture) to PowerShell prior to the computer starting the Out-of-Box Experience. From PowerShell, you run the Set-ExecutionPolicy Unrestricted cmdlet. Thus, the function of this cmdlet is to allow Windows run script files known as scripts which have been typed into the command line.
Question # 2 Multiple Choice The _____ method returns an integer between the two provided numbers. It can take the value of either of the provided numbers. seed randint random range
Answer:
randint
Explanation:
Answer:
randint
Explanation:
ed 2021
Consider the following method, which is intended to return an array of integers that contains the elements of the parameter arr arranged in reverse order. For example array containing (-5, 3, 2, 7) then a new array (-5, 3, 2, 7) contains should be returned and the parameter are should be left unchanged .
public static int[] reverse(int) arr)
Intl new new intarr.length);
for (int k = 0; K arr.length: )
* Bissing statement / return newer;
Write down the statements that can be used to replace / Missing statement so that the method works as intended?
Code:
public static int[] reverse(int [] arr){
Int [] newArr = new int[arr.length];
for (int k = 0; k<arr.length;k++){
/*Missing statement */
}
return newArr;
Answer:
Replace the comment with:
newArr[k] = arr[arr.length-k];
Explanation:
Required
Complete the code
In the given code:
The first line of the given code defines the method
public static int[] reverse(int [] arr){
The next line declares array newArr withe same length as array arr
Int [] newArr = new int[arr.length];
The next line iterates through the elements of array arr
for (int k = 0; k<arr.length;k++){
The /* Missing statement */ is then replaced with:
newArr[k] = arr[arr.length-k];
The above statement gets the elements of array arr in reversed order.
This is so because, as the iteration iterates through array arr in ascending order, arr.length-k gets the element in reversed order
Write a program with total change amount as an integer input, and output the change using the fewest coins, one coin type per line. The coin types are Dollars, Quarters, Dimes, Nickels, and Pennies. Use singular and plural coin names as appropriate, like 1 Penny vs. 2 Pennies.
If input is 0 or less, output is 'No Change'
For Example: Input: 45
Output:
1 Quarter
2 Dimes
input_val = int(input())
if input_val <= 0:
print('No change')
else:
num_dollars == input_val // 100
input_val %= 100
num_quarters == input_val // 25
input_val %= 25
num_dimes == input_val // 10
input_val %= 10
num_nickels == input_val // 5
input_val %= 5
num_pennies == input_val
if num_dollars > 1:
print('%d dollars' % num_dollars)
elif num_dollars ==1:
print('%d dollar' % num_dollars)
if num_quarters > 1:
print('%d quarters' % num_quarters)
elif num_quarters ==1:
print('%d quarter' % num_quarters)
if num_dimes >1:
print('%d dimes' % num_dimes)
elif num_dimes ==1:
print('%d dime' % num_dimes)
if num_nickels >1:
print('%d nickels' % num_nickels)
elif num_nickels ==1:
print('%d nickel' % num_nickels)
if num_pennies >1:
print('%d pennies' % num_pennies)
elif num_pennies ==1:
print('%d penny' % num_pennies)
Answer:
b ,/knlk
Explanation:
Write a program using python 3 that asks the user how many integers they would like to enter. You can assume that this initial input will be an integer >= 1. The program will then prompt the user to enter that many integers. After all the numbers have been entered, the program should display the largest and smallest of those numbers (no, you cannot use lists but you can use loops, if statements, comparison & logical operators). Your code should work correctly no matter what integers the user enters. When you run your program it should match the following format:
How many integers would you like to enter?
4
Please enter 4 integers.
-4
105
2
-7
min: -7
max: 105
I've included my code in the picture below. Best of luck.