Method enqueue

Data-Structures/Queue/Queue.js:29–41

* @description - Add a value to the end of the queue * @param {*} data * @returns {number} - The current size of queue

(data)

   * @returns {number} - The current size of queue
   */
  enqueue(data) {
    const node = { data, next: null }

    if (!this.head && !this.tail) {
      this.head = node
      this.tail = node
    } else {
      this.tail.next = node
      this.tail = node
    }

    return ++this.#size
  }

  /**
   * @description - Removes the value at the front of the queue