26 lines
680 B
Python
26 lines
680 B
Python
from itertools import permutations, combinations
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def amountOfBooksWhere(fun):
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return len([bookOrder for bookOrder in permutations('jjjjccc') if fun(''.join(bookOrder))])
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# a)
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def no_restriction(books):
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return True
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# b)
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def alternating_books(books):
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return all(books.find(l+l) == -1 for l in set(books))
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# c)
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def all_cs_are_together(books):
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return not books.find('ccc') == -1
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# d)
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def all_cs_js_are_together(books):
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return not (books.find('ccc') == -1 or books.find('jjjj') == -1)
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print(amountOfBooksWhere(no_restriction))
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print(amountOfBooksWhere(alternating_books))
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print(amountOfBooksWhere(all_cs_are_together))
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print(amountOfBooksWhere(all_cs_js_are_together))
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