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yatt/toy.py

Created October 25, 2011 15:55
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toy
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toy.py
# https://twitter.com/#!/mnzktw/status/128811724907360256
def to26(n): return n and (to26(n / 26) if n / 26 > 0 else []) + [n % 26] or [0]
def toA1(n): return ''.join(['ABCDEFGHIJKLMNOPQRSTUVWXYZ'[d if i == len(to26(n - 1)) - 1 else d-1] for i,d in enumerate(to26(n - 1))])
print map(toA1, [1, 10, 2000, 30000, 500000, 1000000]) # => ['A', 'J', 'BXX', 'ARIV', 'ABKPT', 'BDWGN']
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