thecoded.prof
CMU Coding Bootcamp
format
+6
-5
+6
-5
python/oct2/level4/routeCipher2.py
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-5
python/oct2/level4/routeCipher2.py
···
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from math import ceil
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from string import ascii_lowercase
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+
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def getIndex(row: int, col: int, rows: int) -> int:
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-
return col*rows + row
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return col * rows + row
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def getRowAndCol(x: int, rows: int) -> tuple[int, int]:
···
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encoded_message = f"{rows}"
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for i in range(0, rows):
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if i % 2 == 0:
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encoded_message += encoded_string[i*row_len:(i+1)*row_len]
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+
encoded_message += encoded_string[i * row_len : (i + 1) * row_len]
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else:
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-
encoded_message += encoded_string[i*row_len:(i+1)*row_len][::-1]
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+
encoded_message += encoded_string[i * row_len : (i + 1) * row_len][::-1]
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return encoded_message
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···
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decoded_string = ""
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for i in range(rows):
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if i % 2 == 0:
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-
decoded_string += encoded_string[i*row_len:(i+1)*row_len]
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+
decoded_string += encoded_string[i * row_len : (i + 1) * row_len]
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else:
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-
decoded_string += encoded_string[i*row_len:(i+1)*row_len][::-1]
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decoded_string += encoded_string[i * row_len : (i + 1) * row_len][::-1]
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for i in range(len(decoded_string)):
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row, col = getRowAndCol(i, rows)
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decoded_message += decoded_string[getIndex(row, col, row_len)]