Matrix Script solved

The problem at hand involves decoding a matrix of characters. The matrix is read in a column-wise manner and then decoded. The decoding process involves replacing a sequence of non-alphanumeric characters, surrounded by alphanumeric characters, with a single space.

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Here is the Matrix Script solved HackerRank solution using CodeRankGPT:

The solution works by first reading the matrix column-wise into a single string. This is done by iterating over each row and column of the matrix and appending the characters to a list in a column-wise manner. The list of characters is then joined into a single string. The decoding is done using a regular expression that matches a sequence of non-alphanumeric characters that are surrounded by alphanumeric characters. This sequence is then replaced with a single space. The final decoded string is then printed.


import re

n, m = map(int, input().split())
character_ar = [""] * (n * m)
for i in range(n):
    line = input()
    for j in range(m):
        character_ar[i + (j * n)] = line[j]
decoded_str = "".join(character_ar)
final_decoded_str = re.sub(
    r"(?<=[A-Za-z0-9])([ !@#$%&]+)(?=[A-Za-z0-9])", " ", decoded_str
)
print(final_decoded_str)

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