git reimport

src/gym/envs/algorithmic/reverse.py

@@ -0,0 +1,15 @@
+"""
+Task is to reverse content over the input tape.
+http://arxiv.org/abs/1511.07275
+"""
+
+from gym.envs.algorithmic import algorithmic_env
+
+class ReverseEnv(algorithmic_env.TapeAlgorithmicEnv):
+    MIN_REWARD_SHORTFALL_FOR_PROMOTION = -.1
+    def __init__(self, base=2):
+        super(ReverseEnv, self).__init__(base=base, chars=True, starting_min_length=1)
+        self.last = 50
+
+    def target_from_input_data(self, input_str):
+        return list(reversed(input_str))