2023-07-21 13:20:49 +0000 UTC

Implement Queue using Stacks
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Code

class MyQueue:

    def __init__(self):
        self.queue = []

    def push(self, x: int) -> None:
        self.queue.insert(0, x)

    def pop(self) -> int:
        return self.queue.pop()

    def peek(self) -> int:
        return self.queue[-1]

    def empty(self) -> bool:
        return len(self.queue) == 0


# Your MyQueue object will be instantiated and called as such:
# obj = MyQueue()
# obj.push(x)
# param_2 = obj.pop()
# param_3 = obj.peek()
# param_4 = obj.empty()