Compute the spreadsheet column encoding

string

converts a spreadsheet column id to the corresponding integer
return 4 for D, 27 for AA,(26 *1 + 1) 702 for ZZ(26 *26 + 26)

  • code, same logic as answer
def ss_decode_col_id(col: str) -> int:
    to_num = lambda x: ord(x) - 64
    f = lambda x, y: x * 26 + y
    res = functools.reduce(f, map(to_num, col))
    return res
  • c ans
def ss_decode_col_id(col):

    return functools.reduce(
        lambda result, c: result * 26 + ord(c) - ord('A') + 1, col, 0)