#!/usr/bin/env pythnn3


'''
Created on Mar 18, 2012

@author: Zack
'''

class Queue():
    """
    Uses FIFO policy

    Queues strings to be dequeued later
    """
    list = []

    def __init__(self, preset = []):
        if (len(preset) != 0):
            self.list = preset

    def enqueue(self, str):
        self.list.append(str)

    def dequeue(self):
        return self.list.pop(0)

    def __len__(self):
        return len(self.list)

def main():
    queue = Queue()
    queue.enqueue('String1')
    queue.enqueue('String2')
    queue.enqueue('String3')
    queue.enqueue('String4')
    queue.enqueue('String5')
    queue.enqueue('String6')
    queue.enqueue('String7')

    print('Queue Count: %d' % len(queue))
    print('Item Dequeued: %s' % queue.dequeue())
    print('Item Dequeued: %s' % queue.dequeue())
    print('Item Dequeued: %s' % queue.dequeue())
    print('Item Dequeued: %s' % queue.dequeue())
    print('Queue Count: %d' % len(queue))

    print('-----------------------------')

    queue2 = Queue(['hello', 'world', 'from', 'python'])
    print('Queue Count: %d' % len(queue2))
    print('Item Dequeued: %s' % queue2.dequeue())
    print('Item Dequeued: %s' % queue2.dequeue())
    print('Queue Count: %d' % len(queue2))


if __name__ == '__main__':
    main()