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Diffstat (limited to 'universe/deepmind/stock-price.py')
-rw-r--r-- | universe/deepmind/stock-price.py | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/universe/deepmind/stock-price.py b/universe/deepmind/stock-price.py deleted file mode 100644 index 7055b66af196..000000000000 --- a/universe/deepmind/stock-price.py +++ /dev/null @@ -1,51 +0,0 @@ -def get_max_profit(xs): - best_profit = xs[1] - xs[0] - lowest_buy = xs[0] - - for x in xs[1:]: - best_profit = max(best_profit, x - lowest_buy) - lowest_buy = min(lowest_buy, x) - return best_profit - - -# Tests - -import unittest - - -class Test(unittest.TestCase): - def test_price_goes_up_then_down(self): - actual = get_max_profit([1, 5, 3, 2]) - expected = 4 - self.assertEqual(actual, expected) - - def test_price_goes_down_then_up(self): - actual = get_max_profit([7, 2, 8, 9]) - expected = 7 - self.assertEqual(actual, expected) - - def test_price_goes_up_all_day(self): - actual = get_max_profit([1, 6, 7, 9]) - expected = 8 - self.assertEqual(actual, expected) - - def test_price_goes_down_all_day(self): - actual = get_max_profit([9, 7, 4, 1]) - expected = -2 - self.assertEqual(actual, expected) - - def test_price_stays_the_same_all_day(self): - actual = get_max_profit([1, 1, 1, 1]) - expected = 0 - self.assertEqual(actual, expected) - - def test_error_with_empty_prices(self): - with self.assertRaises(Exception): - get_max_profit([]) - - def test_error_with_one_price(self): - with self.assertRaises(Exception): - get_max_profit([1]) - - -unittest.main(verbosity=2) |