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Data Structures for Coding Interviews in C++

Challenge: Implement Queue Using Stacks

Explore how to implement a queue data structure using only two stacks in C++. This lesson guides you through writing enqueue and dequeue functions, helping you understand stack and queue interplay and improving your coding skills for interviews.

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Statement

Design a queue data structure using only two stacks and implement the following functions:

  • enqueue(int x): Inserts a value to the back of the queue.
  • dequeue(): Removes and returns the value from the front of the queue.

Constraints:

  • −105≤
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