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class Solution: def init(self): self.stack=[] self.queue=[] def pushCharacter(self,x): self.stack.append(x) def enqueueCharacter(self,x): self.queue.insert(0,x) def popCharacter(self): return self.stack.pop() def dequeueCharacter(self): return self.queue.pop()
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Day 18: Queues and Stacks
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class Solution: def init(self): self.stack=[] self.queue=[] def pushCharacter(self,x): self.stack.append(x) def enqueueCharacter(self,x): self.queue.insert(0,x) def popCharacter(self): return self.stack.pop() def dequeueCharacter(self): return self.queue.pop()