modify code

Jack-Lee-Hiter · web-flow · commit 49b35b935543 · 2016-08-22T15:39:52.000+08:00
diff --git a/Target Offer/用两个队列实现栈.py b/Target Offer/用两个队列实现栈.py
@@ -7,9 +7,7 @@ def __init__(self):
         self.queue1 = []
         self.queue2 = []
     def push(self, x):
-        if self.queue1 == [] and self.queue2 == []:
-            self.queue1.append(x)
-        elif self.queue1 != [] and self.queue2 == []:
+        if self.queue2 == []:
             self.queue1.append(x)
         else:
             self.queue2.append(x)
@@ -36,4 +34,4 @@ def pop(self):
 print(P.pop())
 print(P.pop())
 print(P.pop())
-print(P.pop())
+print(P.pop())
