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

  • lautterm
     + 0 comments

    this is my code, I replace positive lookbehind and positivei lookahead condition into \b meta string. 

    import math
import os
import random
import re
import sys



N, M = map(int, input().split())

matrix = []

for _ in range(N):
    matrix_item = input()
    matrix.append(matrix_item)

string = ''.join(matrix)
decode = '' 

for i in range(M):
    for index in range(i, len(string), M):
        decode += string[index]
        
decode = re.sub('\\b\W+\\b', ' ', decode)
print(decode)