8. When supplying heated air for a building, one often chooses to mix in some fresh outside air with air that has been heated fr

Answer:

The Python code is provided below with suitable comments

Explanation:

# convert list to set

male_names = set(['Oliver','Declan','Henry'])

# get name for removal and addition from user

remove_name = input("Enter remove name: ")

add_name = input("Enter add name: ")

# remove specified name from set

male_names.remove(remove_name)

# add new name to set

male_names.add(add_name)

# sort the resulting set

a = sorted(male_names)

# output the sorted set

print(a)

Answer:

This is the solution code in Python:

1. alphabets = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J']
3. user_input = input("Enter number of rows and columns: ")
4. myArr = user_input.split(" ")
5. num_rows = int(myArr[0])
6. num_cols = int(myArr[1])
8. seats = []
10. for i in range(num_rows):
11. row = []
12. for j in range(num_cols):
13. row.append(alphabets[j])
14. seats.append(row)
16. output = ""
18. for i in range(len(seats)):
19. for j in range(len(seats[i])):
20. output += str(i + 1) + seats[i][j] + " "
22. print(output)

Explanation:

Initially, we create a small list of alphabets from A to J (Line 1).

We then request the user to enter the number of rows and columns (Line 3). Given that the input comes as a string (e.g., "2 3"), we utilize the split() method to separate the numbers into individual items in a list (Line 4). The first item (row number) is assigned to variable num_rows, while the second item (column number) goes to num_cols.

Subsequently, we construct the seats list with a nested for-loop (Lines 10-15). Once the seats list is formed, another nested for-loop generates the required output string as per the question (Lines 19-21).

Finally, the output is printed (Line 23). For example, an input of 2 3 results in the output:

1A 1B 1C 2A 2B 2C