Using Size() method to check stack empty, removed unnecessary class v…

…ariable declaration
nryoung · Apr 22, 2016 · 79d3a93 · 79d3a93
1 parent 768cea7
commit 79d3a93
Showing 1 changed file with 1 addition and 2 deletions.
diff --git a/algorithms/data_structures/stack.py b/algorithms/data_structures/stack.py
@@ -11,7 +11,6 @@
 
 
 class Stack:
-    stack_list = []
 
     def __init__(self):
         self.stack_list = []
@@ -39,7 +38,7 @@ def is_empty(self):
 
         Time Complexity:  O(1)
         """
-        return not len(self.stack_list)
+        return not self.size()
 
     def size(self):
         """