Programming & Computer Science Answers

def invert_dict(d):

   inverse = dict()

   for key in d:

      val = d[key]

     if val not in inverse:

        inverse[val] = [key]

     else:

        inverse[val].append(key)

   return inverse 

Modify this function so that it can invert your dictionary. In particular, the function will need to turn each of the list items into separate keys in the inverted dictionary. 

Run your modified invert_dict function on your dictionary. Print the original dictionary and the inverted one. 

Include your Python program and the output in your Learning Journal submission. 

Describe what is useful about your dictionary. Then describe whether the inverted dictionary is useful or meaningful, and why. 

Write a loop over the strings in list test_miss and call missing_letters with each string. Print a line for each string listing the missing letters. For example, for the string "aaa", the output should be the following.

aaa is missing letters bcdefghijklmnopqrstuvwxyz

If the string has all the letters in alphabet, the output should say it uses all the letters. For example, the output for the string alphabet itself would be the following.

abcdefghijklmnopqrstuvwxyz uses all the letters

Print a line like one of the above for each of the strings in test_miss.

Submit your Python program. It should include the following.

The provided code for alphabet, test_dups, test_miss, and histogram.

Your implementation of the has_duplicates function.

A loop that outputs duplicate information for each string in test_dups.

Your implementation of the missing_letters function.

A loop that outputs missing letters for each string in test_miss.

Write a function called missing_letters that takes a string parameter and returns a new string with all the letters of the alphabet that are not in the argument string. The letters in the returned string should be in alphabetical order.

Your implementation should use a histogram from the histogram function. It should also use the global variable alphabet. It should use this global variable directly, not through an argument or a local copy. It should loop over the letters in alphabet to determine which are missing from the input parameter.

The function missing_letters should combine the list of missing letters into a string and return that string.

create a simple program that will calculate the total amount due, accept payment, and display the change

Create a base class called building that stores the number of floors, rooms and area. Create a derived class called house that inherits building and store number of bedrooms and bathrooms. Create another derived class called office that inherits house and store number of window. now show everything creating office class object.

Design and develop a simple application system that computes the Depreciation Cost of Item (D) takes as input the purchase. Price of an Item (P) its expected number of year of service (S) and yearly Depreciation of the Item (Y)

Use the formula D=P-S/Y. 

Note : 

After the user enter the Purchase Price of an item (P) its expected number of year of Service (S) and yearly depreciation for the item (Y) at text boxes 1,2 and 3 the user should Click button (with a compute caption) before the resulting computed value will be displayed at the text box 4 

VISUAL BASIC

Design and develop a simple application system that computes the Depreciation Cost of Item (D) takes as input the purchase. Price of an Item (P) its expected number of year of service (S) and yearly Depreciation of the Item (Y)

Use the formula D=P-S/Y.

Note :

After the user enter the Purchase Price of an item (P) its expected number of year of Service (S) and yearly depreciation for the item (Y) at text boxes 1,2 and 3 the user should Click button (with a compute caption) before the resulting computed value will be displayed at the text box 4

Design and develop a simple application system that computes the Depreciation Cost of Item (D) takes as input the purchase. Price of an Item (P) its expected number of year of service (S) and yearly Depreciation of the Item (Y)

Use the formula D=P-S/Y. 

Note : 

After the user enter the Purchase Price of an item (P) its expected number of year of Service (S) and yearly depreciation for the item (Y) at text boxes 1,2 and 3 the user should Click button (with a compute caption) before the resulting computed value will be displayed at the text box 4 

A toy shop has a unique way of selling their toys to children. As the shop opens the toys prices keeps increasing for every sale he makes. After some time the shopkeeper prefers to lower the price every sale he makes. For example , say the starting prices of the toy is Rs. 10. He decides to increase the price by 5 for 5 first entries and reduce the price by 5 there after. The list would be 10 15 20 25 30 25 20 15 10 5 0. Given this kind of pricing, every day he wants to find what is the maximum price a child had paid for the toy. Write a program to help the shop keep find the toys price in less than O(n) time. You will be given the array. The number of entries for which the shopkeeper decides to increase is kept as a secret.

create a pseudocode that will Write a program that allows the user to enter any number of names; i.e – last name and first name. Using one of the predefined methods of the Array class, order the names in ascending order. Display the results.