Lists Practice Assignments

Overview

Lists are a foundational data structure in computer programming. These assignments will help you practice using lists.

Submission Instructions

For each of the following practice assignments, save your solution in a .py file, with the name being lists and the number of the assignment. For example, for Lists01: Names, save your solution in a file named lists01.py. Then, submit that file the respective assignment on codePost.io.

Practice Assignments

Lists01: Names

Write a Python program that prompts the user for how many names to store in a list. Then, prompt the user that many times, storing each of the user's entries into a list named names. Display the names list. User input in bold

Example 1:
How many names do you want to enter? 3
Please enter a name: Pat
Please enter a name: Chris
Please enter a name: Ryan
['Pat', 'Chris', 'Ryan']

Example 2:
How many names do you want to enter? 7
Please enter a name: Casey
Please enter a name: Riley
Please enter a name: Jessie
Please enter a name: Jackie
Please enter a name: Jaime
Please enter a name: Kerry
Please enter a name: Jody
['Casey', 'Riley', 'Jessie', 'Jackie', 'Jaime', 'Kerry', 'Jody']

Provided code: 
def main():
  ''' Your solution goes here '''

  print( names )

main()

Lists02: Powers of 5

Complete the function powersOf5(). Have the function take a parameter n and return a list of the first n powers of 5. One way to calculate powers of 5 is by starting with 1 and then multiplying the previous number by 5.

Examples:
powersOf5( 1 ) returns [1]
powersOf5( 2 ) returns [1, 5]
powersOf5( 3 ) returns [1, 5, 25]
powersOf5( 6 ) returns [1, 5, 25, 125, 625, 3125]
powersOf5( 10 ) returns [1, 5, 25, 125, 625, 3125, 15625, 78125, 390625, 1953125]

Provided code: 
def powersOf5():

Lists03: Odd and Even

Complete the oddNumbers() functions to take an int (as a parameter). Return a list of all of the odd numbers between 1 and one less than the parameter.

Also, complete the evenNumbers() functions to take an int (as a parameter). Return a list of all of the even numbers between 2 and one less than the parameter.

Examples:
oddNumbers( 9 ) returns [1, 3, 5, 7]
evenNumbers( 7 ) returns [2, 4, 6]

Provided code: 
def oddNumbers():



def evenNumbers():

Lists04: Modify a list

Write the modifyList() function to delete the first element of names and change the last element to Ava.

Examples:
modifyList( ['Gertrude', 'Sam', 'Ann', 'Joseph'] ) returns ['Sam', 'Ann', 'Ava']
modifyList( ['Ulysses', 'Bob', 'Giuseppe'] ) returns ['Bob', 'Ava']

Provided code: 
def modifyList( names ):

Lists05: Reverse Sort

Complete reverseSort() so that it returns a copy of lst that is in reverse alphabetical order.

Examples:
reverseSort( ['Jan', 'Sam', 'Ann', 'Joe', 'Todd'] ) returns ['Todd', 'Sam', 'Joe', 'Jan', 'Ann']
reverseSort( ['I', 'Love, 'Python'] ) returns ['Python', 'Love', 'I']

Provided code: 
def reverseSort( lst ):

Lists06: Min, Max, Sum and Count

Complete the minMaxSumCount() function to take a list as a parameter and return a different list with the following elements (in order):
  • the lowest value value
  • the largest value,
  • the total of all of the values
  • the number of elements in the parameter list.

Examples:
minMaxSumCount( [90, 95, 94, 92, 91, 98, 97, 97, 90] ) returns [90, 98, 844, 9]
minMaxSumCount( [95] ) returns [95, 95, 95, 1]

Provided code: 
def minMaxSumCount( ):

Lists07: Party Invitation

Write a Python program to display an invitation to each of the people in the friends list, using a for loop.

Example:
Casey, please come to my party on Saturday
Riley, please come to my party on Saturday
Jessie, please come to my party on Saturday
Jackie, please come to my party on Saturday
Jaime, please come to my party on Saturday
Kerry, please come to my party on Saturday
Jody, please come to my party on Saturday

Provided code: 
def main( ):
    # Display an invitation to each friend in the following list
    friends = ['Casey', 'Riley', 'Jessie', 'Jackie', 'Jaime', 'Kerry', 'Jody']



main()

Lists08: Extra Credit Total

Complete the extraCreditTotal() function to take a list of grades as a parameter and return the total number points above 100.

Examples:
extraCreditTotal( [101, 83, 107, 90] ) returns 8 (because 1 + 0 + 7 + 0 is 8)
extraCreditTotal( [89, 113, 95] ) returns 13
extraCreditTotal( [89, 73, 96, 97, 99, 100] ) returns 0

Provided code: 
def extraCreditTotal( ):

Lists09: Shift Grades

Write a Python program that asks the user how many points to shift the grades in the list named grades. Display each of the values in grades (each on its own line), shifted by the value from the user.

Example 1: 
Please enter the amount to shift the grades: 1
92
91
86
88
94
77
93

Example 2: 
Please enter the amount to shift the grades: 5
96
95
90
92
98
81
97

Provided code: 
def main( ):
    grades = [91, 90, 85, 87, 93, 76, 92]


main()

Lists10: Longest Word

Complete the longestWord() function to take a list as a parameter and return the length of the longest word in that list.

Examples:
longestWord(['Python', 'rocks']) returns 6
longestWord(['Casey', 'Riley', 'Jessie', 'Jackie', 'Jaime', 'Kerry', 'Jody']) returns 6
longestWord(['I', 'a', 'am', 'an', 'as', 'at', 'ax', 'the']) returns 3

Provided code: 
def longestWord( ):

Lists11: isScrambled

Complete the isScrambled() function to return True if stringA can be reordered to make stringB. Otherwise, return False. Ignore spaces and capitalization. You must use a list for this assignment.

Examples:
isScrambled( 'Easy', 'Yase' ) returns True
isScrambled( 'Easy', 'EasyEasy' ) returns False
isScrambled( 'eye', 'eyes' ) returns False
isScrambled( 'abcdefghijklmnopqrstuvwxyz', 'zyxwvutsrqponmlkjihgfedcba' ) returns True
isScrambled( 'Game Test', 'tamegest' ) returns True

Provided code: 
def isScrambled( stringA, stringB ):

Lists12: Rows and Columns Sums

Write two functions, sumRows() and sumCols(), which each takes a two-dimensional list. sumRows() should return a list of totals for each row. sumCols() should return a list of totals for each column.

Examples:
exampleA2DList = [[44, 45], [46, 47], [48, 49]]
sumRows(exampleA2DList) returns [89, 93, 97] (because 89 = 44 + 45, 93 = 46 + 47, and 98 = 48 + 49)
sumCols(exampleA2DList) returns [138, 141] (because 138 = 44 + 46 + 48, and 141 = 45 + 47 + 49)

exampleB2DList = [[76, 64, 23, 58], [73, 15, 24, 94], [86, 39, 89, 35], [39, 15, 76, 2]]
sumRows(exampleB2DList) returns [221, 206, 249, 132]
sumCols(exampleB2DList) returns [274, 133, 212, 189]

Hints:
You can assume that each row has the same number of elements. How do you iterate through a 2D list? Think about rows and columns, and how they correspond to a 2D list.

Provided code: 
def sumRows():

def sumCols():

Lists13: Multiplication Table

Write a function makeMultiplicationTable() that takes two parameters, m and n, where m equals the number of rows and n equals the number of columns. This function should return a two-dimensional list, where each element is the product of the row index plus 1 and the column index plus 1.

Examples:
rows = 3
cols = 4
makeMultiplicationTable( rows, cols ) returns [[1, 2, 3, 4], [2, 4, 6, 8], [3, 6, 9, 12]]

rows = 10
cols = 10
makeMultiplicationTable( rows, cols ) returns [[0, 1, 2, 3, 4, 5, 6, 7, 8, 9], [1, 1, 2, 3, 4, 5, 6, 7, 8, 9], [2, 2, 4, 6, 8, 10, 12, 14, 16, 18], [3, 3, 6, 9, 12, 15, 18, 21, 24, 27], [4, 4, 8, 12, 16, 20, 24, 28, 32, 36], [5, 5, 10, 15, 20, 25, 30, 35, 40, 45], [6, 6, 12, 18, 24, 30, 36, 42, 48, 54], [7, 7, 14, 21, 28, 35, 42, 49, 56, 63], [8, 8, 16, 24, 32, 40, 48, 56, 64, 72], [9, 9, 18, 27, 36, 45, 54, 63, 72, 81]]
Hints:
Provided code:
def makeMultiplicationTable():