August 2024
Intermediate to advanced
516 pages
11h 47m
English
Content preview from A Common-Sense Guide to Data Structures and Algorithms in JavaScript, Volume 1Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Queues
A queue is another data structure designed to process temporary data. It’s like a stack in many ways, except that it processes data in a different order. Like a stack, a queue is also an abstract data type.
You can think of a queue as a line of people at the movie theater. The first one in the line is the first one to leave the line and enter the theater. With queues, the first item added to the queue is the first item to be removed. That’s why computer scientists apply the acronym FIFO to queues: first in, first out.
As with a line of people, a queue is usually depicted horizontally. It’s also common to refer to the beginning of the queue as its front and the end of the queue as its back.
Like stacks, queues are arrays with three ...
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