Data Structures for Coding Interviews in Java/

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Solution: Implement Queue Using Stacks

Solution: Implement Queue Using Stacks

Let’s solve the Implement Queue Using Stacks problem.

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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≤-10^5 \leq x ≤105\leq 10^5
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