def test1(self):
expect = 2
actual = Solution.jump("", [2, 3, 1, 1, 4])
self.assertEqual(expect, actual)
def test4(self):
expect = ""
actual = Solution.jump("", [0, 1, 1, 1, 4])
self.assertEqual(expect, actual)
def test6(self):
expect = 0
actual = Solution.jump("", [1])
self.assertEqual(expect, actual)
def test3(self):
expect = 2
actual = Solution.jump("", [4, 1, 4, 2, 1, 5, 1])
self.assertEqual(expect, actual)
