def __init__(self, size=10):
self.in_queue = MyQueue(size=size)
self.out_queue = MyQueue(size=size)
class MyQueueStack(object):
def __init__(self, size=10):
self.in_queue = MyQueue(size=size)
self.out_queue = MyQueue(size=size)
def push(self, val):
self.in_queue.enqueue(val)
while not self.out_queue.is_empty():
self.in_queue.enqueue(self.out_queue.dequeue())
self.in_queue, self.out_queue = self.out_queue, self.in_queue
def pop(self):
self.out_queue.dequeue()
def is_empty(self):
return self.in_queue.is_empty() and self.out_queue.is_empty()
def is_full(self):
return self.in_queue.is_full() or self.out_queue.is_full()