August 2018
Intermediate to advanced
124 pages
2h 47m
English
Content preview from Hands-On Artificial Intelligence for Search
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Queue data structure
A queue is a sequence of people or objects waiting to be attended to. Some examples include a queue of people waiting at a counter, a queue of swimmers that are ready to dive in to a pool, and a queue of songs in a playlist:
Figure 10
Just like in a stack, there are two types of operations—one for inserting items into a queue, and one for removing items from a queue. When a person joins a queue, he or she must stand behind the last person. The operation of adding an item to a queue is called enqueue. The first person to be attended to in a queue is the person standing in the front. The operation to remove an item from ...
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