use bernoulli distribution for random start

main.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-import random
 import copy
 import matplotlib.pyplot as plt
 import numpy as np
@@ -31,13 +30,8 @@ class State(object):
             )
 
     def randomBoard(self):
-        for idx, i in enumerate(self.board):
-            for jdx, j in enumerate(i):
-                if random.randint(1, 2) == 1:
-                    self.board[idx, jdx] = 1
-                else:
-                    self.board[idx, jdx] = 0
-
+        self.board = np.random.binomial(1, 0.5, (self.width, self.depth))
+        return self.board
     def terminal_render(self):
         print("-" * (self.width + 2))
         for i in self.board: