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9-liner: sort by characters & maintain the NEW order solution in Clear category for Determine the Order by Stensen
def checkio(words):
chars, result = sorted(set(''.join(words))), ''
chars_len = len(chars)
while len(result) < chars_len:
for char in chars:
if all(char not in word or word[0] == char for word in words):
words = list(filter(None, map(lambda i: i.replace(char, ''), words)))
chars.remove(char); result += char; break
return result
Nov. 18, 2020
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