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

Matrix Script

  • some_random
     + 1 comment

    Here is a really simple but hopefully readable solution:

    #!/bin/python3

import re
n, m = map(int, input().split())        
matrix = [ input() for _ in range(n) ] 

# a very Pythonic way to transpose and flatten a list of iterables - barely readable but you know what it's doing
transpose = ''.join([c for ls in zip(*matrix) for c in ls])

# Lookaheads and Lookbehinds let us use a simple 'sub' to replace every sandwiched cluster of symbols.
print(re.sub(r"(?<=\w)[!@#$%& ]+(?=\w)", " ", transpose))