Grokking the Engineering Manager Coding Interview
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Introduction to Queues

What is a Queue?

A queue is a linear data structure that follows the First-In, First-Out (FIFO) principle. This means that the first element added to the queue is the first one to be removed, just like a real-life queue where people wait in line for a service.

Real-World Analogy

Imagine you are waiting in line at a coffee shop:

  1. The first person in the line is the first to get their coffee.
  2. When a new person arrives, they join at the end of the queue.
  3. The queue progresses in order, ensuring fairness in processing.

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A

annejunkstuff

· 8 months ago

Yes, this image makes it look like all the node references are pointing towards the 'front'. But the linked list implementation has all the node links pointing towards the 'rear'.

Possibly the arrows are meant to represent flow of data, but it that's the case, given how arrows in data structure images often indicate references, this is very misleading.

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Gabriele Gennaro

Gabriele Gennaro

· a year ago

In the image the arrows that connect the nodes are wrong. They should represent the "next" item each node has and they should point to"who will be served after me?", so they should go from the front towards the rear .

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