Lab 10 Solutions Extra PDF

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This is the solution for the tenth lab exercise session by Professor Qun Liu....

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Lab 10 Solutions 1. String sequence to list Write a Python program which accepts a sequence of comma-separated numbers from user and generate a list and a tuple with those numbers. Example: Input: 3, 5, 7, 23 Output : List : ['3', ' 5', ' 7', ' 23'] Tuple : ('3', ' 5', ' 7', ' 23') Solution: inputStr = input("Please, enter the numbers: ") myList = inputStr.split(",") myTuple = tuple(myList) print(myList) print(myTuple)

2. Histogramm Write a Python program to create a histogram from a given list of integers.

Example: Input: 2, 3, 6, 5 Output : ** *** ****** ***** Solution: inputStr = input("Please, enter the numbers: ") myList = inputStr.split(",") for i in myList: intI = int(i) print("*"*intI)

3. Tuple to a dictionary. Write a Python program to convert a tuple to a dictionary. Solution 1: tuplex = ((2, "w"),(3, "r")) print(dict((y, x) for x, y in tuplex))

Solution 2: inputStr = input("Please, enter the numbers: ") myList = inputStr.split(",") t = tuple(myList) d= dict() for i in range(len(t)): d[i] = t[i] print(t) print(d)

4. Replace last value Write a Python program to replace last value of tuples in a list. Go to the editor Example: Sample list: Expected

[(10, 20, 40), (40, 50, 60), (70, 80, 90)] Output: [(10, 20, 100), (40, 50, 100), (70, 80, 100)]

Solution: lastElement = int(input("Please, enter the numbers: ")) # Simplify for short input (can be any list of any tuples) tupleOfLists = [(10, 20, 40), (40, 50, 60), (70, 80, 90)] new_tupleOfLists = [] for t in tupleOfLists: new_t =t[:-1] one_element_tuple = tuple([lastElement]) new_tupleOfLists.append(new_t+one_element_tuple) print (new_tupleOfLists)

5. Lo Shu Magic Square The Lo Shu Magic Square is a grid with 3 rows and 3 columns, shown in Figure 7-8. The Lo Shu Magic Square has the following properties: ● The grid contains the numbers 1 through 9 exactly. ● The sum of each row, each column, and each diagonal all add up to the same number. This is shown in figure: 4

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In a program you can simulate a magic square using a two-dimensional list. Write a function that accepts a two-dimensional list as an argument and determines whether the list is a Lo Shu Magic Square. Test the function in a program.

Solution: See Lab 10 task 5 Solution.pdf...