Tag: queues

  • Algorithms 101: How to implement a stack by using two queues

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    用队列实现栈 In this problem, we are required to implement a stack using two queues. The stack should support all four standard operations: push, top, pop, and empty. 在这个问题中，我们需要使用两个队列来实现一个栈。该栈应支持所有四种标准操作：push、top、pop 和 empty。 Approach The main idea behind using two queues to implement a stack is to simulate the Last In First Out…