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First solution in Uncategorized category for Determine the Order by Cairnarvon
def checkio(data):
chars = set(''.join(data))
dec = ''
while chars:
for c in sorted(chars):
if all(c not in s or c == s[0] for s in data):
dec += c
break
else:
# Can't determine an answer
return None
chars -= {dec[-1]}
data = [s.replace(dec[-1], '') for s in data]
return dec
May 22, 2013
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