Queues in Javascript

Queues are very similar to stacks. They’re sort of like a simpler version of arrays. You can think of them as like standing in line.

The first person in line is the first person to leave the queue. Thus, you can only shift and push to queues.

Queues follow the rule, first in, first out (FIFO). So when you shift a queue, you remove the first item in the queue, and everything else shifts down the line. This is also known as dequeuing because you’re taking something off of the queue.

Pushing to a queue adds an item to the end. This is also known as enqueuing or adding an item to the queue.

If you understand arrays, you pretty much can grasp how queues work. Queues are just more restricted arrays, because you can’t insert items into the middle of a queue, and you can only shift or push to queues.

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