queue represented by a pseudo stack represented by a list with pop and append from typing import any class queue def initself self stack self length 0 def strself printed strself stack1 1 return printed dequeues code item requirement self length 0 return dequeued item that was dequeued def getself any self rotate1 dequeued self stackself length 1 self stack self stack 1 self rotateself length 1 self length self length 1 return dequeued reports item at the front of self return item at front of self stack def frontself any front self get self putfront self rotateself length 1 return front enqueues code item param item item to enqueue dequeues code item requirement self length 0 return dequeued item that was dequeued rotates the queue code rotation times param rotation number of times to rotate queue reports item at the front of self return item at front of self stack returns the length of this stack
from typing import Any


class Queue:
    def __init__(self):
        self.stack = []
        self.length = 0

    def __str__(self):
        printed = "<" + str(self.stack)[1:-1] + ">"
        return printed

    

    def put(self, item: Any) -> None:
        self.stack.append(item)
        self.length = self.length + 1

    

    def get(self) -> Any:
        self.rotate(1)
        dequeued = self.stack[self.length - 1]
        self.stack = self.stack[:-1]
        self.rotate(self.length - 1)
        self.length = self.length - 1
        return dequeued

    

    def rotate(self, rotation: int) -> None:
        for _ in range(rotation):
            temp = self.stack[0]
            self.stack = self.stack[1:]
            self.put(temp)
            self.length = self.length - 1

    

    def front(self) -> Any:
        front = self.get()
        self.put(front)
        self.rotate(self.length - 1)
        return front

    

    def size(self) -> int:
        return self.length