示例#1
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 def test_1_by_1_grid(self):
     self.assertEqual(lattice_paths(1, 1), 2)
示例#2
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 def test_0_by_0_grid(self):
     self.assertEqual(lattice_paths(0, 0), 1)
示例#3
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 def test_3_by_3_grid(self):
     self.assertEqual(lattice_paths(3, 3), 20)
示例#4
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 def test_project_euler_input(self):
     self.assertEqual(lattice_paths(20, 20), 137846528820)
示例#5
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 def test_2_by_2_grid(self):
     self.assertEqual(lattice_paths(2, 2), 6)