diff --git a/inference.py b/inference.py
index 34d43a0..be838de 100644
--- a/inference.py
+++ b/inference.py
@@ -644,7 +644,8 @@ class ParticleFilter(InferenceModule):
         """
         self.particles = []
         "*** YOUR CODE HERE ***"
-        raiseNotDefined()
+        for index in range(self.numParticles):
+            self.particles.append(self.legalPositions[index % len(self.legalPositions)])
         "*** END YOUR CODE HERE ***"
 
     def getBeliefDistribution(self):
@@ -656,7 +657,13 @@ class ParticleFilter(InferenceModule):
         This function should return a normalized distribution.
         """
         "*** YOUR CODE HERE ***"
-        raiseNotDefined()
+        self.beliefs = DiscreteDistribution()
+
+        for particle_position in self.particles:
+            self.beliefs[particle_position] += 1
+        self.beliefs.normalize()
+        return self.beliefs
+
         "*** END YOUR CODE HERE ***"
     
     ########### ########### ###########