Python: Print a given N by M matrix of numbers line by line in forward > backwards > forward >... order

Python Basic - 1: Exercise-78 with Solution

Write a Python program to print a given N by M matrix of numbers line by line in forward > backwards > forward >... order.

Input matrix:
[[1, 2, 3, 4],
[5, 6, 7, 8],
[0, 6, 2, 8],
[2, 3, 0, 2]]
Output:
1
2
3
4
8
7
6
5
0
6
2
8
2
0
3
2

Sample Solution:

Python Code:

def print_matrix(nums):
    flag = True 
    
    for line in nums:

        if flag == True: 
            i = 0
            while i < len(line):
                print(line[i])
                i += 1
            flag = False

        else: 
            i = -1
            while i > -1 * len(line) - 1:
                print(line[i])
                i = i - 1
            flag = True
print_matrix([[1, 2, 3, 4],
              [5, 6, 7, 8],
              [0, 6, 2, 8],
              [2, 3, 0, 2]])

Sample Output:

1
2
3
4
8
7
6
5
0
6
2
8
2
0
3
2

Flowchart:

Python Code Editor:

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