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  2. Python
  3. Regex and Parsing
  4. Matrix Script
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Matrix Script

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580 Discussions

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  • jyotiprajapati02
     + 0 comments

    import math import os import random import re import sys

    first_multiple_input = input().rstrip().split()

    n = int(first_multiple_input[0])

    m = int(first_multiple_input[1])

    matrix = []

    for _ in range(n): matrix_item = [char for char in input()] matrix.append(matrix_item) zipped_list = list(zip(*matrix)) for i in range(m): zipped_list[i] = "".join(zipped_list[i]) decodedMsg = "".join(zipped_list)

    matches = re.sub(r'(?<=\w)[^\w]+(?=\w)',' ', decodedMsg) print(matches)

  • kumarmayashanka1
     + 0 comments
    #!/bin/python3

import re

# Read the matrix dimensions
first_multiple_input = input().rstrip().split()
n = int(first_multiple_input[0])  # Number of rows
m = int(first_multiple_input[1])  # Number of columns

# Read the matrix
matrix = []
for _ in range(n):
    matrix_item = input()
    matrix.append(matrix_item)

# Transpose the matrix to read columns as rows
decoded_script = ''.join([matrix[i][j] for j in range(m) for i in range(n)])

# Replace non-alphanumeric characters between alphanumeric characters with a single space
cleaned_script = re.sub(r'(?<=\w)[^\w]+(?=\w)', ' ', decoded_script)

# Print the cleaned decoded script
print(cleaned_script)

  • rodssilveira97
     + 0 comments

    Very nice. Already checked for trailing spaces. No idea what happened.

    Your Output (stdout) This is Matrix# %!

    Expected Output This is Matrix# %!

  • Tinai4
     + 0 comments

    Wow its increadible how much easier this can be done. Thank you for sharing people. I have written solution myself, it gives the same answers in the tests but for some reason it says its not correct in here. Maybe you can help to see why

    Edit: I found that i do if r"name"== r"main" and that was the problem!

    import re

def main():
    first_multiple_input = input().rstrip().split()
    n = int(first_multiple_input[0])
    matrix = []
    for _ in range(n):
        matrix_item = input()
        matrix.append(matrix_item)
    my_string = matrix_to_string(matrix)
    print(decode(my_string))

def matrix_to_string(matrix):
    transposed_matrix = []
    for new_row in zip(*matrix):
        for s in new_row:
            transposed_matrix.append(s)
    return "".join(transposed_matrix)

def decode(my_string):
    code, part_string = find_begining(my_string)
    my_string = my_string.replace(part_string, "")
    decoded = code
    while code:
        try:
            code, part_string = find_begining(my_string)
        except AttributeError:
            break
        my_string = my_string.replace(part_string, "")
        decoded = f"{decoded} {code}"
    return decoded + my_string

def find_begining(string):
    my_match = re.match(r"(^[\W]*([\w]+))", string)
    return my_match.group(2), my_match.group(1)

if __name__ == "__main__":
    main()

  • JanekPython09
     + 0 comments

    Easy solution

    tekst = ""
for i in range(m):
    for j in range(n):
        tekst += matrix[j][i]
print(re.sub(r'(?<=[a-zA-Z0-9])[^a-zA-Z0-9]+(?=[a-zA-Z0-9])', ' ', tekst))