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"""Queue represented by a python list"""

class Queue():

def __init__(self):

self.entries = []

self.length = 0

self.front=0

def __str__(self):

printed = '<' + str(self.entries)[1:-1] + '>'

return printed

"""Enqueues {@code item}

@param item

item to enqueue"""

def put(self, item):

self.entries.append(item)

self.length = self.length + 1

"""Dequeues {@code item}

@requirement: |self.length| > 0

@return dequeued

item that was dequeued"""

def get(self):

self.length = self.length - 1

dequeued = self.entries[self.front]

self.front-=1

self.entries = self.entries[self.front:]

return dequeued

"""Rotates the queue {@code rotation} times

@param rotation

number of times to rotate queue"""

def rotate(self, rotation):

for i in range(rotation):

self.put(self.get())

"""Enqueues {@code item}

@return item at front of self.entries"""

def front(self):

return self.entries[0]

"""Returns the length of this.entries"""

def size(self):

return self.length