Create print-foobar-alternately.py

Author: kamyu104

Python/print-foobar-alternately.py

@@ -0,0 +1,39 @@
+# Time:  O(n)
+# Space: O(1)
+
+import threading
+
+
+class FooBar(object):
+    def __init__(self, n):
+        self.__n = n
+        self.__curr = False
+        self.__cv = threading.Condition()
+
+    def foo(self, printFoo):
+        """
+        :type printFoo: method
+        :rtype: void
+        """
+        for i in xrange(self.__n):
+            with self.__cv:
+                while self.__curr != False:
+                    self.__cv.wait()
+                self.__curr = not self.__curr
+                # printFoo() outputs "foo". Do not change or remove this line.
+                printFoo()
+                self.__cv.notify()
+
+    def bar(self, printBar):
+        """
+        :type printBar: method
+        :rtype: void
+        """
+        for i in xrange(self.__n):
+            with self.__cv:
+                while self.__curr != True:
+                        self.__cv.wait()
+                self.__curr = not self.__curr
+                # printBar() outputs "bar". Do not change or remove this line.
+                printBar()
+                self.__cv.notify()