educative.io

Educative

Exercise 1 - Javascript Queues Question

I’m in the middle of the First Exercise for the Queues lesson and I’m failing either of the last two tests. I’m not sure I understand what this._head is supposed to be when the queue has one item but the head is empty. I thought if I dequeued everything on the collection that the head would always be zero. Why is this not the case?

@Caro_ls

If you deque everything, the head will point to null. For clear explanation kindly provide your code.