Changes:递归均值计算以及测试代码完成

average_x.py

@@ -0,0 +1,29 @@
+from algorithm import algorithm
+import json
+import ray
+
+@ray.remote
+class average_x(algorithm):
+    def __init__(self):
+        self.config_dict_ = None
+        self.config_ = None
+        self.average_number_ = 10
+        self.present_number_ = 0
+        self.avg_ = 0
+
+    def set_config(self, config):
+        self.config_ = config
+        self.config_dict_ = json.loads(self.config_)
+        self.average_number_ = self.config_dict_["AVERAGE_NUMBER"]
+        self.init_flag_ = False
+
+    def config(self):
+        return self.config_
+
+    def eval(self, value):
+        if self.init_flag_ == False:
+            self.init_flag_ = True
+            self.avg_ = value
+        else:
+            self.avg_ = self.avg_ * (self.average_number_ - 1)/self.average_number_ + value / self.average_number_
+        return self.avg_