I need a Python Tutor for 1 hour, very simple stuff. I have the worksheet examples in the description
Budget: €8 – €30 EUR
PROGRAMMING BASICS
EXERCISE SET #05
Write the following Python sub-programs, each of which involves manipulating lists. Make sure you compile and run each sub-program to test that it works.
1) MeanOf takes as its parameter a list of numbers called numList and returns as its result the arithmetic mean of the numbers in numList.
You should use the list functions sum and len to help you calculate the mean of the numbers in the list. For example, MeanOf([1, 3, 2, 6, 12, 6]) should return the value 5 (because the list contains 6 numbers that add up to 30).
2) MedianOf takes as its parameter a list of numbers called numList and returns as its result the median of the numbers in numList.
You should use the list method sort to get the numbers in order and then employ list indexing to find the median value. If the list has an odd number of elements the median will be in the middle of the sorted list, if it has an even number of elements the median will be the average of the two middle values). For example, MedianOf([1, 3, 2, 6, 12, 6]) should return the value 4.5 (because the two middle numbers in the sorted version of the list are 3 and 6).
3) Shortest takes as its parameter a list of character strings called strList and returns the shortest string in the list.
You should use a loop (either while or for) to work through the strings in the list, using len to find the length of each string in turn and comparing it with the shortest one found so far. For example, Shortest(["Anna", "Nico", "Jonathan", "Kim"]) should return the string "Kim". Question: what does your sub-program return if there is not a single shortest string, but several of the same (shortest) length?
4) AlphaFirst takes as its parameter a list of character strings called wordList in which each string is a word in the English language and returns as its result the word that comes first in the alphabet.
You should use the list method sort to get the words into alphabetical order. For example, AlphaFirst(["Lemon", "Orange", "Home", "Run"]) should return the string "Home".
Note that this may not work correctly, if some of the characters in the words are capital letters and others are lower-case. How can this be fixed?
5) Squares takes a positive integer n as its parameter and returns a list of the first n squares. You will need to use a while loop and the list method append to generate the list of squares. For example Squares(5) should return the list [1, 4, 8, 16, 25].
Programming Basics Carmine Siena, M.A.
6) Factorials takes a positive integer n as its parameter and returns a list of the first n factorials.
You will need to use a while loop and the list method append to generate the list of factorials. For example Factorials(5) should return the list [1, 2, 6, 24, 120].
7. Evens takes a positive integer n as its parameter and returns a list of the first n even numbers.
You will need to use a while loop and the list method append to generate the list of even numbers. For example Evens(5) should return the list [2, 4, 6, 8, 10].
8) SquareList takes a list of numbers numList as its parameter and returns a list containing the squares of all the numbers in numList.
You will need to use a loop (either while or for) to work through numList and the list method append to generate the list of squares. For example SquareList ([3, 2, 6, 7]) should return the list [9, 4, 36, 49].
9) RemoveAll takes two parameters, a list named itemList and a value named item, and returns a list that is the same as itemList except that all instance of item have been removed. If item was not in itemList the list returned is just the original itemList.
EXERCISE SET #05
Write the following Python sub-programs, each of which involves manipulating lists. Make sure you compile and run each sub-program to test that it works.
1) MeanOf takes as its parameter a list of numbers called numList and returns as its result the arithmetic mean of the numbers in numList.
You should use the list functions sum and len to help you calculate the mean of the numbers in the list. For example, MeanOf([1, 3, 2, 6, 12, 6]) should return the value 5 (because the list contains 6 numbers that add up to 30).
2) MedianOf takes as its parameter a list of numbers called numList and returns as its result the median of the numbers in numList.
You should use the list method sort to get the numbers in order and then employ list indexing to find the median value. If the list has an odd number of elements the median will be in the middle of the sorted list, if it has an even number of elements the median will be the average of the two middle values). For example, MedianOf([1, 3, 2, 6, 12, 6]) should return the value 4.5 (because the two middle numbers in the sorted version of the list are 3 and 6).
3) Shortest takes as its parameter a list of character strings called strList and returns the shortest string in the list.
You should use a loop (either while or for) to work through the strings in the list, using len to find the length of each string in turn and comparing it with the shortest one found so far. For example, Shortest(["Anna", "Nico", "Jonathan", "Kim"]) should return the string "Kim". Question: what does your sub-program return if there is not a single shortest string, but several of the same (shortest) length?
4) AlphaFirst takes as its parameter a list of character strings called wordList in which each string is a word in the English language and returns as its result the word that comes first in the alphabet.
You should use the list method sort to get the words into alphabetical order. For example, AlphaFirst(["Lemon", "Orange", "Home", "Run"]) should return the string "Home".
Note that this may not work correctly, if some of the characters in the words are capital letters and others are lower-case. How can this be fixed?
5) Squares takes a positive integer n as its parameter and returns a list of the first n squares. You will need to use a while loop and the list method append to generate the list of squares. For example Squares(5) should return the list [1, 4, 8, 16, 25].
Programming Basics Carmine Siena, M.A.
6) Factorials takes a positive integer n as its parameter and returns a list of the first n factorials.
You will need to use a while loop and the list method append to generate the list of factorials. For example Factorials(5) should return the list [1, 2, 6, 24, 120].
7. Evens takes a positive integer n as its parameter and returns a list of the first n even numbers.
You will need to use a while loop and the list method append to generate the list of even numbers. For example Evens(5) should return the list [2, 4, 6, 8, 10].
8) SquareList takes a list of numbers numList as its parameter and returns a list containing the squares of all the numbers in numList.
You will need to use a loop (either while or for) to work through numList and the list method append to generate the list of squares. For example SquareList ([3, 2, 6, 7]) should return the list [9, 4, 36, 49].
9) RemoveAll takes two parameters, a list named itemList and a value named item, and returns a list that is the same as itemList except that all instance of item have been removed. If item was not in itemList the list returned is just the original itemList.