def testChange3(self): self.assertEqual(hw.change(35, [1, 3, 16, 30, 50]), 3)
def testChange1(self): self.assertEqual(hw.change(48, [1, 5, 10, 25, 50]), 6)
def testChange2(self): self.assertEqual(hw.change(48, [1, 7, 24, 42]), 2)
def testChange4(self): self.assertEqual(hw.change(6, [4, 5, 9]), float('inf'))