LeetCode-641 Design Circular Deque : Design your implementation of the circular double-ended queue (deque). note : Returns -1 if the deque is empty.MyAnswer :::python class MyCircularDeque: def init(self, k: int): self.maxsize = k self.deq = collections.deque(maxlen=k) self.deq_size = 0 def insertFront(self, value: int) -> bool: if self.deq_size bool: if self.deq_size bool: if self.deq_size > 0:..