Question

Write a program that creates a two dimensional array with 4 rows and 3 columns that contains the below numbers. Let the computer prompt you to enter these numbers.





After that, calculate and print the total and average of these values.​

Answer 1

Explanation:

Python Exercise: Generates a two-dimensional array

Python Conditional: Exercise-11 with Solution

Write a Python program which takes two digits m (row) and n (column) as input and generates a two-dimensional array. The element value in the i-th row and j-th column of the array should be i*j.

Note :

i = 0,1.., m-1

j = 0,1, n-1.

Pictorial Presentation:

Python Exercise: Generates a two-dimensional array

Sample Solution:

Python Code :

row_num = int(input("Input number of rows: "))

col_num = int(input("Input number of columns: "))

multi_list = [[0 for col in range(col_num)] for row in range(row_num)]

for row in range(row_num):

for col in range(col_num):

multi_list[row][col]= row*col

print(multi_list)

Copy

Sample Output:

Input number of rows: 3

Input number of columns: 4

[[0, 0, 0, 0], [0, 1, 2, 3], [0, 2, 4, 6]]

Flowchart:

Flowchart: Python - Generates a two dimensional array

Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:

Python Code Editor :

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Previous: Write a Python program which iterates the integers from 1 to 50. For multiples of three print "Fizz" instead of the number and for the multiples of five print "Buzz". For numbers which are multiples of both three and five print "FizzBuzz".

Next: Write a Python program that accepts a sequence of lines (blank line to terminate) as input and prints the lines as output (all characters in lower case).

What is the difficulty level of this exercise?

EASY MEDIUM HARD

Based on 218 votes, average difficulty level of this exercise is Medium .

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Python: Tips of the Day

Python: Data classes structure

>>> from dataclasses import dataclass

>>> @dataclass

>>> class DataClassCard:

>>> rank: str

>>> suit: str

>>> queen_of_hearts = DataClassCard('Q', 'Hearts')

>>> queen_of_hearts.rank

'Q'

>>> queen_of_hearts

DataClassCard(rank='Q', suit='Hearts')

>>> queen_of_hearts == DataClassCard('Q', 'Hearts')

True

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Sample Solution:

Python Code :

1. row_num = int(input("Input number of rows: "))

2. col_num = int(input("Input number of columns: "))

3. multi_list = [[0 for col in range(col_num)] for row in range(row_num)]

4.

5. for row in range(row_num):

6. for col in range(col_num):

7. multi_list[row][col]= row*col

8.

9. print(multi_list)