A linear data structure that follows the First-In-First-Out (FIFO) principle, where elements are added at one end (rear) and removed from the other end (front). Like a line of people waiting, the first person in line is the first to be served.
From French 'queue' meaning 'tail,' originally referring to a line of people or animals. The computing term was adopted in the 1940s-50s because data waiting to be processed resembled people waiting in a line or queue.
A queue is like the line at your favorite coffee shop - first come, first served! The person who arrived first gets their coffee first, and new customers join at the back of the line. This is exactly how your printer queue works - documents print in the order they were sent!
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