"""用两个栈来实现一个队列,完成队列的push和pop操作"""
class Solution:
def __init__(self):
self.stack_a = []
self.stack_b = []
def push(self
"""用两个栈来实现一个队列,完成队列的push和pop操作"""
class Solution:
def __init__(self):
self.stack_a = []
self.stack_b = []
def push(self