fixes

src/examples_book/adt/queues/queue.py

@@ -1,39 +0,0 @@
-#!/usr/bin/python3
-# mari von steinkirch @2013
-# steinkirch at gmail
-
-
-class Queue(object):
-    ''' a class for a queue '''
-    def __init__(self):
-        self.items = []
-
-    def isEmpty(self):
-        return self.items == []
-
-    def enqueue(self, item):
-        self.items.insert(0, item)
-
-    def dequeue(self):
-        return self.items.pop()
-
-    def size(self):
-        return len(self.items)
-        
-    def peek(self):
-        return self.items[-1]
-
-
-def main():
-    queue = Queue()
-    queue.enqueue(1)
-    queue.enqueue(2)
-    queue.enqueue(3)
-    print(queue.size())    
-    print(queue.peek())   
-    print(queue.dequeue())  
-    print(queue.peek())    
-
-
-if __name__ == '__main__':
-    main()