示例#1
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 def test_n_choose_k_k_bigger_than_n(self):
     assert _n_choose_k(5, 10) == 0
示例#2
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 def test_n_choose_k_big_k(self):
     assert _n_choose_k(10, 8) == 45
示例#3
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 def test_n_choose_k_same(self):
     assert _n_choose_k(10, 10) == 1
示例#4
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 def test_n_choose_k_small_k(self):
     assert _n_choose_k(10, 4) == 210